What is the solubility of CaF_2in a buffer solution containing 0.45 M – InterviewSolution

1.	What is the solubility of CaF_2in a buffer solution containing 0.45 M HCOOH and 0.20 M HCOONa? K_(sp)(CaF_2) = 3.4 xx 10^(-11), K (HF) = 6.8 xx 10^(-4), K (HCOOH) = 1.7 xx 10^(-4)
Answer» Solution :`2[CA^(2+)] =[F^(-)] + [HF] ` `2.75 XX 10^(-4) M`

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