Concept explainers
Cadmium(ll) chloride is added to a solution of potassium hydroxide with a pH of 9.62.
(a) At what concentration of Cd2+ does a precipitate first start to form?
(b) Enough cadmium(II) chloride is added to make
(c) What percentage of the original hydroxide ion is left in solution?
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Chapter 15 Solutions
Chemistry: Principles and Reactions
- Sufficient sodium cyanide, NaCN, was added to 0.015 M silver nitrate, AgNO3, to give a solution that was initially 0.108 M in cyanide ion, CN. What is the concentration of silver ion, Ag+, in this solution after Ag(CN)2 forms? The formation constant Kf for the complex ion Ag(CN)2 is 5.6 1018.arrow_forwardConsider the reaction BaF2(s)+SO42(aq)BaSO4(s)+2 F(aq) (a) Calculate K for the reaction. (b) Will BaSO4 precipitate if Na2SO4 is added to a saturated solution of BaF2?arrow_forwardAn analytical chemist has a solution containing chloride ion, Cl. She decides to determine the amount of chloride ion in the solution by titrating 50.0 mL of this solution by 0.100 M AgNO3. As a way to indicate the endpoint of the titration, she added 1.00 g of potassium chromate, K2CrO4 (see Figure 17.5). As she slowly added the silver nitrate to the solution, a white precipitate formed. She continued the titration, with more white precipitate forming. Finally, the solution turned red, from another precipitate. The volume of the solution at this point was 60.3 mL. How many moles of chloride ion were there in the original solution? How many moles of chloride ion were there in the final solution? You may make any reasonable approximations.arrow_forward
- Copper(l) chloride, CuCl, is the starting material for the fungicide copper oxychloride. At 25C, a saturated solution of CuCl is prepared by dissolving 10.1 mg of CuCl in 0.250 L of water. What is the Ksp, for copper(I) chloride?arrow_forwardSolid lead nitrate is added to a solution that is 0.020 M in OH- and SO42-. Addition of the lead nitrate does not change the volume of the solution. (a) Which compound, PbSO4 or Pb(OH)2 (Ksp=2.81016), will precipitate first? (b) What is the pH of the solution when PbSO4 first starts to precipitate?arrow_forwardA saturated solution of silver oxalate. Ag2C2O4. contains 6.9 105-M C2O42 at 25 C. Calculate the Ksp of silver oxalate at that temperature, assuming that the ions do not react with water and the dissociation is complete.arrow_forward
- Lead(II) chromate, PbCrO4, was used as a yellow paint pigment (chrome yellow). When a solution is prepared that is 5.0 104 M in lead ion, Pb2, and 5.0 105 M in chromate ion, CrO42, would you expect some of the lead(II) chromate to precipitate?arrow_forwardThe concentration of Mg2+ in seawater is 0.052 M. At what pH will 99% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 1012.]arrow_forwardThe Ksp value for radium sulfate, RaSO4, is 4.2 1011. If 25 mg of radium sulfate is placed in 1.00 102 mL of water, does all of it dissolve? If not, how much dissolves?arrow_forward
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