Which of the following is most soluble?

`Bi_(2)S_(3)` `(K_(sp)=1times10^(-70))`
`MnS` `(K_(sp)=7times10^(-16))`
`Cus` `(K_(sp)=8times10^(-45))`
`Ag_(2)S` `(K_(sp)=6times10^(-51))`

Compare the solubility of Fe(OH)_(3) (K_(sp) = 4 xx 10^(-38)) and Ni(OH)_(2).(K_(sp) = 2 xx 10^(-16)) at pH = 5.0

Some chemists at wished to perpare a saturated solution of a silver compound and they wanted it to have the highest concentration of silver ion possible. Which of the following compound would they use ? K_(sp) (AgCI) = 1.8 xx 10^(-10), K_(sp) (AgBr) = 5.0 xx 10^(-13) , K_(sp) (Ag_(2)CrO_(4)) = 2.4 xx 10^(-12) ["Use" 3sqrt(0.6) = 0.84]

If the solubility of AgCl in 0.1 M NaCl is ( K_(sp) of AgCl = 1.2 xx 10^(-10) )

On adding 0.1 M solution each of Ag^(+),Ba^(2+), Ca^(2+) ions in a Na_(2)SO_(4) solution, species first precipitated is (K_(sp)BaSO_(4)=10^(-11),K_(sp)CaSO_(4)=10^(-6),K_(sp) Ag_(2)SO_(4)=10^(-5))

Determine the solubility of Cr(OH)_(3) in mol L^(-1) , If its K_(sp) is 2.7 xx 10^(-31) M^(4) .

A solution containing both Zn^(2+) and Mn^(2+) ions at a concentration of 0.01M is saturated with H_(2)S . What is pH at which MnS will form a ppt ? Under these conditions what will be the concentration of Zn^(2+) ions remaining in the solution ? Given K_(sp) of ZnS is 10^(-22) and K_(sp) of MnS is 5.6 xx 10^(-16), K_(1) xx K_(2) of H_(2)S = 1.10 xx 10^(-21) .

Out of the following salts identify the one which has maximum solubility (in M) : (P) Barium sulphate having K_(sp)=1.1xx10^(-10) (Q) Aluminium phosphate having K_(sp) =6.3xx10^(-19) (R ) Cadmium iodate having K_(sp)=3.2xx10^(-8) (S) Cuprous chloride having K_(sp) =1.2xx10^(-6)

The simultaneous solubility of AgCN (K_(sp)=2.5xx10^(-6))and AgCl (K_(sp)=1.6xx10^(-10)) in "1 M NH"_(3)(aq) are respectively Given K_(f)[Ag(NH_(3))_(2)]^(+)=10^(7)