The answer is that, in general, heavy metal iodides are insoluble (AgI, PbI2 and HgI2 are examples). Write and balance the overall chemical equation. For those mistures that showed a reaction or has product that is insoluble, write a balanced chemical equation and a net ionic equation for the reaction. My recommendation is to give the expected answer and move on. asked by Kelly October 23, 2012 2 answers 2NH4Br (aq) + Pb (C2H3O2)2 (aq) ==> PbBr2 (s) + 2NH4C2H3O2 (aq) Potassium monosulfide | HK2S+ | CID 14800 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities . The most important step in analyzing an unknown reaction is to write down all the specieswhether molecules or dissociated ionsthat are actually present in the solution (not forgetting the solvent itself) so that you can assess which species are most likely to react with one another. This is a double replacement reaction, so we write this for the full molecular: Note that both products are soluble and both ionize. Any thing with Potassium, Sodium, Ammonium, or Nitrate will dissolve in water. You can specify conditions of storing and accessing cookies in your browser. The equation balance by splitting the chemical formula. The corresponding mass of NaCl is, \[ mass\: NaCl = 78 .1 \: \cancel{mol\: NaCl} \left( \dfrac{58 .44\: g\: NaCl} {1\: \cancel{mol\: NaCl}} \right) = 4560\: g\: NaCl = 4 .56\: kg\: NaCl \]. By the way, it helps that the question text tips off that this reaction should be treated as an acid-base reaction. We need to make sure we're balanced at each step along the way. "There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase. KF The two possible products from an exchange reaction are aluminum bromide and strontium nitrate: B According to Table 4.2.2, both AlBr3 (rule 4) and Sr(NO3)2 (rule 2) are soluble. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Our correct answer is number two. Se pueden hacer dos s'mores. And the only possible product I have here is the copper carbonate. More than one of the above would dissolve in water. Chemical Equation: (NH4)2S(aq) + 2KOH(aq) -> K2S(aq) + 2NH4OH(s), Complete Ionic Equation: 2NH4^+(aq) + S^2-(aq) + 2K^+(aq) 2OH^-(aq) -> 2K^+(aq) + S^2- (aq) + 2NH4OH(s) 2NH4^+(aq) + OH^-(aq) -> NH4OH(s), This site is using cookies under cookie policy . Problem #22: ammonium phosphate + calcium chloride --->. This is originally a double displacement reaction that would produce potassium acetate and ammonium sulfide. Ca2+(aq) + 2NO3-(aq)+Na(aq)+S2-(S)-->CaS(s) Na(aq)+NO3-(aq) C2H6O(l)--->CO2(g)+3H20(g), What type of reaction is described by the following equation? An aqueous solution of ammonium carbonate is allowed to react with an aqueous solution of barium chloride. Figure 4.2.2 Outline of the Steps Involved in Producing a Black-and-White Photograph. To determine whether a precipitation reaction will occur, we identify each species in the solution and then refer to Table 4.2.2 to see which, if any, combination(s) of cation and anion are likely to produce an insoluble salt. Please include state symbols in both reactions. In aqueous solution, it is only a few percent ionized. 6OH-(aq) + 3H2PO4- ---> 3PO43-(aq) + 6H2O(). Aqueous solutions of calcium bromide and cesium carbonate are mixed. One problem is that your instructor will insist that sulfuric acid is fully dissociated in BOTH hydrogens. Ca2+(aq)+S2-(aq)-->CaS(l) Which of the following ionic compounds is . Golden yellow c. Brick red 4. So let's look at an example. Net ionic equations demonstrate that many different combinations of reactants can give the same net chemical reaction. What is the net ionic equation describing this reaction? Let's consider the unbalanced molecular equation for the reaction between aqueous solutions of ammonium acetate and potassium sulfide. Gas Chromatography-Mass Spectrometry Chromatography, High Pressure Liquid. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. This reaction is a double displacement. Write the net ionic equation for this reaction. Al and Mg Net ionic equation tutorial of 4.02 x 10 metric tons per year in 1990 and it takes approximately 7000 kilograms of crude oil to produce 1 ton of So we just need 1 of each of them. Ca2+(aq)+2NO3-(aq)+Na(aq)+S2-(aq)-->CaS(s)NaNO3(a) If 34.6 ml of 0.563 M silver nitrate are used with 148.4 ml of potassium iodide: a) What molarity of potassium iodide will. To solve a math problem, you need to first clarify what the problem is asking. Because ionic substances such as AgNO3 and K2Cr2O7 are strong electrolytes, they dissociate completely in aqueous solution to form ions. Just as important as predicting the product of a reaction is knowing when a chemical reaction will not occur. If there is no net ionic equation, simply write "none." X |(aq). Q: Complete and balance the molecular equation for the reaction between aqueous solutions of ammonium. 3) Identify the spectator ions in the complete ionic equation: Conclusion: the net ionic equation is exactly the same as the complete ionic equation. Everything has changed between reactants and products, there are no spectator ions. In particular, ammonia (NH 3), hydrogen sulfide (H 2 S . However, most heavy metal carbonates precipitate, so it's a fairly reasonable guess that V2(CO3)5 is not soluble. b) Ammonia combined with cupric oxide to yield copper, molecular nitrogen and water . Problem #14: Write balanced net ionic equations for the following reactions in aqueous solution: All three soluble substances are ionic, so they becomes ions in solution. Comment: thallium compounds are not commonly asked in these types of questions nor are thallium compounds commonly included in a solubility table. Not necessarily anything like those of the elements, When two different elements combine to form a compound, the resulting properties of the compound are Ammonium acetate and potassium sulfide balanced equation - Ammonium acetate and potassium sulfide balanced equation is a mathematical instrument that assists . Solution for Write the complete ionic equation for the reaction that takes place when aqueous solutions of ammonium acetate and potassium sulfide are mixed. However, a different reaction is used rather than the one immediately above. , na pieza de chocolate y dos malvaviscos. Hence, it is written in molecular form. Bonus Problem: Write the molecular, complete ionic and net ionic equation for the reaction between sodium hydrogen sulfite and hydrobromic acid. Potassium chromate and lead(II) acetate are both dissolved in a beaker of water, where they react to form solid lead (II) chromate. The only other thing it can be paired with is carbonate, because I can't form a compound between copper and potassium or between nitrate and carbonate, because I can't have two cations or two anions. As(OH) in a weak acid with pKa= 9.2, and most of As(OH)3in aqueous solution exists as molecules. No gas is formed. Thus solid lead acetate dissolves in water to give Pb2+ and CH3CO2 ions. The Ag+ concentration is determined as follows: \[ [Ag^+ ] = \dfrac{moles\: Ag^+} {liters\: soln} = \dfrac{0 .0260\: mol\: AgCl} {0 .500\: L} = 0 .0520\: M \]. NH4+(aq) + H2PO4-(aq) ---> In doing so, it is important to recognize that soluble and insoluble are relative terms that span a wide range of actual solubilities. In predicting products, H2CO3(aq) is never a possibility. This course is a precursor to the Advanced Chemistry Coursera course. In that case, this is the net ionic tha results: Problem #16: Identify the spectator ion in this reaction: Ba2+(aq) + 2OH(aq) + 2H+(aq) + SO42(aq) ---> BaSO4(s) + H2O. Silver recovery may be economically attractive as well as ecologically sound, although the procedure outlined is becoming nearly obsolete for all but artistic purposes with the growth of digital photography. Both products are soluble 3. calcium sulfide + lead(II) nitrate. , the following cases? Final answer. Double decomposition reaction No liquid water (a hallmark of the acid base neutralization) is formed. Best math calculator app! Most people treat it as strongly ionized (meaning 100%) in both hydrogen ions. Ammonium has a chemical formula and h. 4 plus acetate is c: 2 h, 3, o 2 minus. Ba2+ + 2OH(aq) + 2H+ + SO42(aq) ---> BaSO4(s) + 2H2O(). Q: write and balance: When aqueous iron (III) sulfate is mixed with aqueous magnesium hydroxide, iron. Co(NO3)3(aq) + Mg(ClO3)2(aq) ---> The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains to be ejected out of the flower in a mere 0.30 ms at an acceleration of 2.5104m/s22.5 \times 10 ^ { 4 } \mathrm { m } / \mathrm { s } ^ { 2 }2.5104m/s2. Lead (II) nitrate and potassium iodide Complete Molecular Equation: Complete Ionic Equation: Net Ionic Equation: Type of Reaction: Observations: 11. NCl2, Express the following in proper scientific notation: 3600s Na+(aq) + HSO3-(aq) + H+(aq) + Br-(aq) ---> Na+(aq) + Br-(aq) + H2O() + SO2(g) Areas that are covered include atomic structure, periodic trends, compounds, reactions and stoichiometry, bonding, and thermochemistry. Our objective in this unit is to get to the net ionic equation so that we can see exactly the change that's happening in a reaction between two ionic compounds. Get 5 free video unlocks on our app with code GOMOBILE, Write the complete ionic equation for the reaction that takes place when aqueous solutions of ammonium acetate and potassium sulfide are mixed Iaq). The complete combustion of a 0.5728 g sample of a compound that contains only C, H, . 5 answers; chemistry; asked by Rachel; 2,777 views Write a balanced net ionic equation for the acid-base reaction that could, in principle, occur. What is the product of this synthesis reaction 2NO(g) + Cl2(g) Replacement, which of the following reactions between halogens and halide salts will occur? what is the volume of the residual gas in each of An x-ray of the digestive organs of a patient who has swallowed a barium milkshake. A barium milkshake is a suspension of very fine BaSO4 particles in water; the high atomic mass of barium makes it opaque to x-rays. Lets consider the reaction of silver nitrate with potassium dichromate. Two important uses of precipitation reactions are to isolate metals that have been extracted from their ores and to recover precious metals for recycling. What would be the net ionic reaction if aqueous solutions of potassium sulfate and barium acetate were mixed? What are the units used for the ideal gas law? If a precipitate forms, write the net ionic equation for the reaction. We can convert this value to the number of moles of AgCl as follows: \[ moles\: AgCl = \dfrac{grams\: AgCl} {molar\: mass\: AgCl} = 3 .73\: \cancel{g\: AgCl} \left( \dfrac{1\: mol\: AgCl} {143 .32\: \cancel{g\: AgCl}} \right) = 0 .0260\: mol\: AgCl \]. We will balance it using the trial and error method. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. To obtain the complete ionic equation, we write each soluble reactant and product in dissociated form: \( 3Ba^{2+}(aq) + 6NO_3^-(aq) + 6Na^+(aq) + 2PO_4^{3-}(aq) \rightarrow Ba_3(PO_4)_2(s) + 6Na^+(aq) + 6NO_3^-(aq) \). Very easy to use and clear with explanations. I want you to notice the (s) after the copper(II) hydroxide. Molecular: Na 2 CO 3 + KNO 3-----> 2NaNO 3 + K 2 CO 3. net ionic: However, a different reaction is used rather than the one immediately above. Write the net ionic equation for any reaction that occurs. Decomposition Before we can get to the net ionic equation, we first need to look at the complete ionic equation. A When aqueous solutions of strontium bromide and aluminum nitrate are mixed, we initially obtain a solution that contains Sr2+, Br, Al3+, and NO3 ions. If you treat the above as a double replacement reaction, you can see that the sodium ion and the chloride ion are the spectator ions. Name the metallic radical present when the colour of the flame is. No new substances are formed when the vinegar reacts with the baking soda If you do not turn in a printed copy of the lab, . Balance and write the ionic equation and net ionic . We will: balance K atoms by multiplying CHCOOK by 2. Write a partial net ionic equation: Silver acetate is insoluble and you learn this from a solubility chart. Image used with permission from Wikipedia. Equations & Reaction Types menu. Synthesis or direct combination reaction If you treat the above as a double replacement reaction, you can see that the sodium ion and the chloride ion are the spectator ions. 3600X10^3s In the above problem, there is no base. Part 3 (1 point) Synthesis We will discuss solubilities in more detail later, where you will learn that very small amounts of the constituent ions remain in solution even after precipitation of an insoluble salt. Because the product is Ba3(PO4)2, which contains three Ba2+ ions and two PO43 ions per formula unit, we can balance the equation by inspection: \( 3Ba(NO_3)_2(aq) + 2Na_3PO_4(aq) \rightarrow Ba_3(PO_4)_2(s) + 6NaNO_3(aq) \). Calcium nitride + water 3. The easiest way to make that kind of prediction is to attempt to place the reaction into one of several familiar classifications, refinements of the five general kinds of reactions (acidbase, exchange, condensation, cleavage, and oxidationreduction reactions). The overall chemical equation for the reaction shows each reactant and product as undissociated, electrically neutral compounds: \[2AgNO_3(aq) + K_2Cr_2O_7(aq) \rightarrow Ag_2Cr_2O_7(s) + 2KNO_3(aq)\tag{4.2.1}\]. B The total number of moles of Ag+ present in 1500 L of solution is as follows: \[ moles\: Ag^+ = 1500\: \cancel{L} \left( \dfrac{0 .520\: mol} {1\: \cancel{L}} \right) = 78 .1\: mol\: Ag^+ \], C According to the net ionic equation, one Cl ion is required for each Ag+ ion. If the acceleration is constant, what impulse is delivered to a pollen grain with a mass of 1.0107g1.0 \times 10 ^ { - 7 } \mathrm { g }1.0107g? There is no use of (aq). What remains is the net ionic equation 2Co 3+ (aq) + 3S 2- (aq) Co2S3 (s) 1.5K views View upvotes net ionic: For charge to be conserved, the sum of the charges of the ions multiplied by their coefficients must be the same on both sides of the equation. There is no reaction and so there is no net ionic equation. 2023 Coursera Inc. All rights reserved. Ca2+(aq)+S2-(aq)-->CaS(aq) From molecular to the complete ionic to the net ionic. Solid lead(II) acetate is added to an aqueous solution of ammonium iodide. All four substances are soluble and all 4 ionize 100%. What will the net ionic equation be? The rationale for (aq) is that the Cu(OH)2 that does react dissolves (and ionizes, as we shall see) first and so it reacts as aqueous rather than solid. Solid potassium phosphate is added to an aqueous solution of mercury(II) perchlorate. Potassium Chromate's chemical formula is K2CrO4. If we look at net ionic equations, it becomes apparent that many different combinations of reactants can result in the same net chemical reaction. Conclusion? Write all the soluble reactants and products in their dissociated form to give the complete ionic equation; then cancel species that appear on both sides of the complete ionic equation to give the net ionic equation. The sodium ion and the chloride ion are spectator ions. Google Digital Marketing & E-commerce Professional Certificate, Google IT Automation with Python Professional Certificate, Preparing for Google Cloud Certification: Cloud Architect, DeepLearning.AI TensorFlow Developer Professional Certificate, Free online courses you can finish in a day, 10 In-Demand Jobs You Can Get with a Business Degree. Ammonium sulfide (NH4)2S ( N H 4) 2 S and copper (II) acetate Cu(CH3COO)2 C u ( C H 3 C O O) 2 are both soluble ionic compounds in water. Recovery of silver from thiosulfate fixing solutions involves first removing the thiosulfate by oxidation and then precipitating Ag+ ions with excess chloride ions. That being said, thallium is a heavy metal (that's a hint about the solubility). (a) If the speed of each is 0.9c0.9 c0.9c relative to Earth, what is the speed of one relative to the other? Combustion What is the net ionic equation? A complete ionic equation consists of the net ionic equation and spectator ions. Complete ionic based on solid for Cu(OH)2: It is important to note that sulfuric acid is a strong acid, but only to the extent of the dissociation of the first H+. Solution for Write the complete ionic equation for the reaction that takes place when aqueous solutions of ammonium acetate and potassium sulfide are mixed. (TCOD), soluble chemical oxygen demand (SCOD), total Kjeldahl nitrogen (TKN), ammonium nitrogen (NH 4 +-N), and total volatile . BaCO3. Indeed so helpful for a college student like me. Refer to Table 4.2.2 to determine which, if any, of the products is insoluble and will therefore form a precipitate. It turns out that ammonium dihydrogen phosphate is quite soluble, but, evidently, it does precipitate out when the solution is very acidic. The possible products of an exchange reaction are rubidium chloride and cobalt(II) hydroxide): B According to Table 4.2.2, RbCl is soluble (rules 1 and 4), but Co(OH)2 is not soluble (rule 5). Cs(s)+H20(l)--->CsOH(aq)+H2(g) The ammonia and water come from NH4OH, a "compound" which is unstable, decomposing immediately to ammonia and water. Solution: 1) Complete ionic: Ag+(aq) + NO3-(aq) + CH3COOH(aq) ---> AgCH3COO(s) + H+(aq) + NO3-(aq) Acetic acid is a weak acid, consequently it is written in molecular form. Although Equation 4.2.1 gives the identity of the reactants and the products, it does not show the identities of the actual species in solution. A precipitation reaction is a reaction that yields an insoluble producta precipitatewhen two solutions are mixed. N.R. Now, what I can do when I write my net ionic equation is I basically eliminate those spectator ions. Asked for: reaction and net ionic equation. Students tend to think that this means they are supposed to just know what will happen when two substances are mixed. A Because barium chloride and lithium sulfate are strong electrolytes, each dissociates completely in water to give a solution that contains the constituent anions and cations. In contrast, because Ag2Cr2O7 is not very soluble, it separates from the solution as a solid. Exothermic reactions are those accompanied by a release of heat (energy) Example: 2 H2 (g) + O2 (g) 2 H2O(g) + Energy Endothermic reactions are those that require heat (energy) to be added for the reaction to occur. I'm so thankful because I have this privilege to enroll in this course for free! 4.2: Precipitation Reactions is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts. Single replacement reaction Ammonium phosphate and zinc nitrate Molecular Equation: Complete Ionic Equation: Net Ionic Equation: Lithium hydroxide and barium chloride Molecular Equation: Complete Ionic Equation: Silver nitrate and magnesium iodide. Precipitate: Chemical Equation: Compl Get the answers you need, now! This is the overall balanced chemical equation for the reaction, showing the reactants and products in their undissociated form. Posted yesterday View Answer Q: The Lewis structure of CH 3 NO 2 is given below. This is considered a chemical change because: Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, NH4Br, and aqueous lead (II) acetate, Pb (C2H3O2). 3.6X10^-3s, Potassium chlorate +heat --> Potassium chloride +Oxygen (2 KCl3---> 2 KCl+ 3 O2) is an example of Notice that when we look at our options, we have copper(II) nitrate and potassium carbonate. aqueous strontium sulfide and aqueous potassium sulfate aqueous strontium sulfide and aqueous potassium sulfate Home Realizacje i porady Bez kategorii aqueous . Chemical Equation: Complete Ionic Equation: Net Ionic Equation: 1 See answer Advertisement Advertisement 31889 31889 Answer: Chemical Equation: (NH4)2S(aq) + 2KOH(aq) -> K2S(aq . Again, there could be a problem (or two). So I know that NH4 plus is a spectator ion because it doesn't change as I go from left to right. Thus washing the film with thiosulfate solution dissolves unexposed silver bromide and leaves a pattern of metallic silver granules that constitutes the negative. The number of molecules of reactants and products equal. How many sigma and pi bonds are in this molecule? The net ionic is: How do you know that V2(CO3)5 precipitates? * There are 9 crystalline forms of zinc chloride. Most like the element given in the greatest amount If world crude oil production was about C2H6O(l)+O2 (g)--> CO2(g)+H20(g) The name of the compound according to the IUPAC classification is ammonium sulfide, and the chemical formula for ammonium sulfide is (NH 4) 2 S. The molar mass of ammonium sulfide can be determined by the formula of ammonium sulfide (or the formula of ammonium sulfide) 68.154 g/mol. #"3KCl(aq) + (NH"_4)_3"PO"_4("aq")"##rarr##"K"_3"PO"_4("aq") + "3NH"_4"Cl(aq)"#, #"3K"^(+)("aq")+"3Cl"^(-)("aq")+"3NH"_4^(+)("aq")+"PO"_4("aq")"##rarr##"3K"^(+)("aq")+"PO"_4("aq")+"3NH"_4^(+)("aq")+"3Cl"^(-)("aq")"#. For example, the overall chemical equation for the reaction between silver fluoride and ammonium dichromate is as follows: \(2AgF(aq) + (NH_4)_2Cr_2O_7(aq) \rightarrow Ag_2Cr_2O_7(s) + 2NH_4F(aq)\tag{4.2.4}\). ". Reaction 1 Sodium acetate + Hydrochloric acid Observation: There was effervescence in addition of hydrochloric acid to sodium acetate Molecular Equation: CH3COONa (s)+ HCl (aq) CH3COOH (aq) + NaCl (aq) Complete Ionic equation Na+ (aq)+ CH3COO- (aq)+ H+ (aq)+ Cl- (aq)--> Na + (aq)+ Cl- (aq)+ CH2COO- (aq)+ H+(aq) Net ionic Equation: C2 H3 O2-(aq)+ It is known that 0.031 troy ounces of (1) at 100 degree and 1 atmospheric pressure In this module we're going to look at molecular, ionic, and net ionic equations. See here: Bonus Problem: Write the molecular, complete ionic and net ionic equation for the reaction between sodium hydrogen sulfite and hydrobromic acid. Cl and I, Of the fixed arrangement of its atoms or molecules. Decomposition reaction, Which one of the following compounds is most likely to be an ionic compound? Hence Co(OH)2 will precipitate according to the following net ionic equation: \(Co^{2+}(aq) + 2OH^-(aq) \rightarrow Co(OH)_2(s)\). Mixing the two solutions initially gives an aqueous solution that contains Ba2+, Cl, Li+, and SO42 ions. Because no net reaction occurs, the only effect is to dilute each solution with the other. Which of the following . Sodium Hydroxide Caustics Alkalies Calcium Hydroxide Aluminum Hydroxide Hydroxides Sodium Ammonium Hydroxide Magnesium Hydroxide. false Add NaOH and look for a color change with red litmus paper NH4- Mix with H2SO4 to release CO2 gas, then detect the CO2 with Ba (OH)2 CO32 Because the solution also contains NH4+ and I ions, the possible products of an exchange reaction are ammonium acetate and lead(II) iodide: B According to Table 4.2.2, ammonium acetate is soluble (rules 1 and 3), but PbI2 is insoluble (rule 4). This equation has the general form of an exchange reaction: \[ AC + BD \rightarrow \underset{insoluble}{AD} + BC \tag{4.2.2}\]. The balanced molecular reaction between aqueous solutions of ammonium acetate and potassium sulfide will be, This site is using cookies under cookie policy . The six NO3(aq) ions and the six Na+(aq) ions that appear on both sides of the equation are spectator ions that can be canceled to give the net ionic equation: \(3Ba^{2+}(aq) + 2PO_4^{3-}(aq) \rightarrow Ba_3(PO_4)_2(s)\), Exercise 4.2.1: Mixing Silver Fluoride with Sodium Phosphate. Problem #12: Write balanced molecular equation and net ionic equations for the following reactions. 50cm of H2 were sparked with 50cm of O2 at 100 degree centigrade and 1, atmospheric pressure , Aqueous silver nitrate reacts with aqeous potassium iodide in a double-replacement reaction to produce a precipitate of silver iodide. Thus 78.1 mol of NaCl are needed to precipitate the silver. a. Lilac b. So most of the equations that we've looked at up until now are were actually molecular equations. An outline of the digestive organs appears on x-rays of patients who have been given a barium milkshake or a barium enemaa suspension of very fine BaSO4 particles in water. C2H6O(l)-->3CO2(g) + 3H20(g) The result is that your teacher might insist that the following is the correct answer: Another example where no spectator ions are eliminated: 2H3PO4(aq) + 3Sr2+(aq) + 6OH(aq) ---> Sr3(PO4)2(s) + 6H2O(). As you advance in chemistry, however, you will need to predict the results of mixing solutions of compounds, anticipate what kind of reaction (if any) will occur, and predict the identities of the products. For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, Note that both products are soluble (remember: all nitrates and all chlorates are soluble) and both ionize. Consider the reaction when aqueous solutions of ammonium nitrate and potassium sulfide are combined. When aqueous solutions of copper(II) nitrate and potassium carbonate are mixed, a precipitate forms. The net ionic equation is as follows: \(Pb^{2+} (aq) + 2I^-(aq) \rightarrow PbI_2(s) \). Using the information in Table 4.2.2, predict what will happen in each case involving strong electrolytes. Write the net ionic equation for the reaction that occurs when aqueous solutions of ammonium sulfide and nickel(II) sulfate are combined. Complete and balance the following equations.