What is the molar solubility of manganese (II) carbonate in a solution of 0.250M sodium carbonate?...
What is the molar solubility of manganese (II) carbonate in a solution of 0.250M sodium carbonate? Would the molar solubility be greater or smaller is no sodium carbonate was added? Ksp=2.34*10**-11
Please explain!
Homework Answers
You have the reaction:
MnCO3 = Mn + 2 + CO3-2
You have the expression of Ksp:
Ksp = [Mn + 2] * [CO3-2] = X * (0.25 + X) = 2.34x10 ^ -11
It clears X = 9.4x10 ^ -11 M
The solubility will be lower, since there is a common ion effect CO3-.
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