1.

If you have saturated solution of CaF_2then :

Answer»

` [CA^(2+) ] =sqrt(K_(sp))`
` [Ca^(2+) ] =[F^(-)]`
`2[Ca^(2+) ] =[F^(-)]`
` [Ca^(2+) ] =[K_(sp)//4]^(1//3)`

Solution :` CaF_2 HARR underset(S) Ca^(+2)+underset( 2S)(2F^(-), Ksp =4S^(3) `


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