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if K(sp)(CaF2)=4xx10^(-11) at 25^(@)C th...

if `K_(sp)(CaF_2)=4xx10^(-11)` at `25^(@)`C then find the molar solubility of `CaF_2` in
0.01(M) `Ca(NO_3)_2` solution respectively.

Text Solution

Verified by Experts

Let, in 0.01(M) `Ca(NO_3)_2`, solubility of `CaF_2` is `S_2mol*L^(-1)`
`:. K_(sp)=[Ca^(2+)][F^-]^2=(S_2+0.01)4S_2^2~~0.01xx4S_2^2`
or `0.04xxS_2^2=4xx10^(-11)` or `S_2=3.16xx10^(-5)mol*L^(-1)`
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