Calcium hydroxide is a strong base but is not very soluble ( ksp = 5.02 x 10-6 ). what is the ph of a saturated solution of ca(oh)2 ?

Answer : The pH of a saturated solution is, 12.33

Explanation : Given,

=

First we have to calculate the solubility of ion.

The balanced equilibrium reaction will be:

Let the solubility will be, 's'.

The concentration of ion = s

The concentration of ion = 2s

The expression for solubility constant for this reaction will be,

Let the solubility will be, 's'

Now put the value of in this expression, we get the solubility.

The concentration of ion = s =

The concentration of ion = 2s =

First we have to calculate the pOH.

Now we have to calculate the pH.

Therefore, the pH of a saturated solution is, 12.33

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