Problem: At 22 °C an excess amount of a generic metal hydroxide M(OH)2 is mixed with pure water. The resulting equilibrium solution has a pH of 10.26. What is the Ksp of the salt at 22 °C?Ksp = 

FREE Expert Solution

Dissociation Reaction: M(OH)2(s) → M2+(aq) + 2 OH-(aq)


Ksp=productreactants=[M2+][OH-]2

pOH=14-pOH=14-10.26=3.74

[OH-]=10-pOH=10-3.74=1.82×10-4

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Problem Details

At 22 °C an excess amount of a generic metal hydroxide M(OH)2 is mixed with pure water. The resulting equilibrium solution has a pH of 10.26. What is the Ksp of the salt at 22 °C?

Ksp