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Rufina [12.5K]
3 years ago
5

Compute the moles/liter solubility of calcium hydroxide in 0.047 M sodium hydroxide. Ksp= 1.3 x 10^-6

Chemistry
1 answer:
Annette [7]3 years ago
8 0

Answer:

s= 5.9*10^{-4} M

Explanation:

Solubility is s.

Ca(OH)_{2} --> Ca^{2+} +2OH^{-}\\

                           s           2s

K_{sp}= [Ca^{2+}][OH^{-}]^{2}

K_{sp} = s*(2s)^{2}

When we have Ca(OH)2 in Na(OH) solution, because NaOH has OH- also :

K_{sp}=s*(2s+0.047)^{2},

because 2s << 0.047,

we can write

K_{sp} = s*0.047^{2}\\\\1.3*10^{-6}=s*0.047^{2}\\\\s= 5.9*10^{-4} M

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