1.

The solubility productof a rare earth metal hydroxide M(OH)_3atroomtemperature is4.32 xx 10^(-14)its solubility is

Answer»

`2XX 10^(-3) M`
` 2.0 xx10^(-4) M`
` 2XX10^(-5)M `
` 2.0 XX 10^(-6) M`

SOLUTION :` M( OH)_3 hArr underset(S)M^(+3)= 3 underset( 3S) O H^(-) `
`KsP = (s) (3s) ^(3)= 274 ^(4)=4.32 xx 10 ^(-14), S =2 xx 10 ^(-4) `


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