First slide

Solubility product(KSP)

Question

Which of the following has the lowest value of K_sp at 25⁰C ?

Easy

A

Mg(OH)₂
B

Ca (OH)₂
C

Ba(OH)₂
D

Be(OH)₂

Solution

Among alkaline earth metal hydroxides their solubilities increases down the group due to more decriment of their lattice energy than their hydration energy.
Be(OH)₂ < Mg(OH)₂ < Ca(OH)₂ < Sr(OH)₂ < Ba(OH)₂

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