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A sparingl soluble metal hydroxide M(OH)2 has a molar solubility of S mol/L at 25 degrees C. It's Ksp value is...
4S^3
I know that Ksp = concentations of products raised by their coefficients divided by the concentrations of the reactions raised to their coefficients.
M(OH)2 --> M^2+ + 2 OH-
ksp= [M^2+] [OH]^2
ksp= (S)(2S)^2
ksp=4S^3
Question:
1. Why is it not ksp= [M^2+] [2OH]^2
I understand there are 2 OH ions..... But why does the ksp value change from the [OH]^2 to (2S)^2
2. Why are the reactants^coefficients not in the answer
4S^3
I know that Ksp = concentations of products raised by their coefficients divided by the concentrations of the reactions raised to their coefficients.
M(OH)2 --> M^2+ + 2 OH-
ksp= [M^2+] [OH]^2
ksp= (S)(2S)^2
ksp=4S^3
Question:
1. Why is it not ksp= [M^2+] [2OH]^2
I understand there are 2 OH ions..... But why does the ksp value change from the [OH]^2 to (2S)^2
2. Why are the reactants^coefficients not in the answer
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