Question

1. AgNO3 is added slowly to a solution containing 0.1 M each of Br-, CO32-, and SO42-. Use the Ksp values of AgBr, Ag2CO3, and Ag2SO4 found on pg. 737 to determine the order in which the salts will precipitate out. Take the coefficients of the silver cation and the anions into account. (5)

2. For each pair, determine the solution in which PbI2 will be more soluble: (2)

a. NaClO3 (aq) or NaI (aq)

b. Pb(NO3)2 (aq) or Ba(NO3)2 (aq)

3. Which of the following will be more soluble in acid solution than in water? (2)

a) BaSO4 b) AgI c) FeS

4. Calculate the molar solubility of AgBr in a 1.0 M NH3 solution. (8)

5. In an aqueous solution containing both Zn2+ and Pb2+ which of the following reagents would allow separation of the ions? Explain your choice. (3)

a) Na2CO3 b) HNO3 c) HCl d) NaOH

Answer 1

Answer:

2). a. NaClO3 (aq) or NaI (aq)