Which of the following is most soluble ?

1.	Which of the following is most soluble ?
Answer» ` Bi_2S_3 (K_(sp) =1xx 10^(-17))` `MnS (K_(sp) = 7xx 10 ^(-16))` ` CuS (K_(sp)= 8 xx 10^(-37))` ` Ag_2S (K_(sp)=6 xx 10^(-51))` Solution :For each , calculate S and compare. `Bi_2S_3 : S = 5 sqrt(( 1xx 10 ^(-17))/( 108) ) , MnS: S =sqrt( 7xx 10 ^(-16))` ` CuS: S =sqrt(8xx 10 ^(-37) ) , Ag_2 S : S =3sqrt( ( 6 xx 1 0 ^(-51))/( 4))`

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