Find the solubility constant (K sp ) for each of the following substances. You a

Question

Find the solubility constant (Ksp) for each of the following substances. You are given the molar concentration of their saturated solution. Note that Ksp is not the molar solubility, it is in fact the solubility product constant. If you attempt this question please solve all parts or else your answer will be reported/rated as wrong. Thanks

a) CuSeO3 (saturated solution is 1.42 x 10-4 M) dissolved in a solution containing 0.005M cations

b) PB(IO3)2 (saturated solution is 4.4 x 10-5 M) dissolved in a solution containing 0.005M cations

d) Th(OH)4 (saturated solution is 3.3 X 10-4 M ) dissolved in a solution containing 0.005M cations

Explanation / Answer

According to the equilibrium, AxBy (s) = xAy+ + yBx-

The solubility product is given by

                                                  Ksp= [Ay+]x . [Bx-]y

a) CuSeO3 = Cu2+ + SeO32-

Ksp= (1.42 * 10-4 + 0.005) . (1.42 * 10-4) = 7.3 * 10 -7

b) Pb(IO3)2 = Pb2+ + 2(IO3)-

Ksp= (4.4 * 10-5 + 0.005) . ( 4.4 * 10-5)2 = 9.7 * 10-12

c) Th(OH)4 = Th4+ + 4OH-

Ksp= (3.3 * 10-4 + 0.005) . (3.3 * 10-4)4 = 6.3 * 10-17

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.