Question

PART B ONLY

	Common-Ion Effect on Solubility for Lead Thiocyanate Lead thiocyanate, Pb(SCN)2 , has a Ksp value of Part A Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate the solution can hold. Express the molar solubility numerically. Hints SubmitMy AnswersGive Up Correct Part B Calculate the molar solubility of lead thiocyanate in 0.700 M KSCN . Express the molar solubility numerically.

M

1.71×10−2

M

Answer 1

please check Ksp of Pb(SCN)2   , Ksp = 2.00 x 10^-5 is exactly matches to your site or not . it is very important. if anything different please change Ksp value and solve again .

part B)

Pb(SCN)2   , Ksp = 2.00 x 10^-5

SCN- = 0.700 M

Pb(SCN)2 -------------------------------> Pb2+ + 2SCN-

                                                           S         0.700

Ksp = [Pb2+][SCN-]^2

2.00 x 10^-5 = (S) (0.700)^2

S = 4.08 x 10^-5 M

molar solubility = 4.08 x 10^-5 M