1.

The solubility product of As_(2)O_(3) is 10.8 xx 10^(-9). It is 50% dissociated in saturated solution. The solubility of salt is

Answer»

`10^(-2)`
`2 XX 10^(-2)`
`5 xx 10^(-3)`
`5.4 xx 10^(-9)`

Solution :`As_(2)O_(3) hArr 2As^(3+) + 3O^(2-)`
`K_(sp) = (2S)^(2) (3s)^(3)`
`10.8 xx 10^(-9) = 108 S^(5)`
`S = 10^(-2)`
If dissociation is 50% then solubility is `2 xx 10^(-2)` mol/L.


Discussion

No Comment Found

Related InterviewSolutions