1.

K_(sp) (25^(@)C)of Ag_(2)CrO_(4) is 4 xx 10^(-12). Which of the following mixer will bring about precipitatin of Ag_(2)CrO_(4).

Answer»

`10 mL 3 xx 10^(-4) M AgNO_(3) + 10 mL10^(-4) M Na_(2)CrO_(4)`
Adding `10` milli moles of `Na_(2)CrO_(4)` to `100` mL ofsaturated `AgCl(K_(SP) = 2 xx 10^(-10))` solution
Mixing equal VOLUMES of `10^(-4) M AgNO_(3)` with `10^(-4) M Na_(2)CrO_(4)` solution
`10 mL 10^(-3) M AgNO_(3) + 15 mL10^(-3) M Na_(2)CrO_(4)`

Solution :`K_(sp) Ag_(2)CrO_(2) = 4 xx 10^(-12)`
In B & D option
`[AG^(+)]^(2) [CrO_(4)^(2-)] gt K_(sp)`
`:.` Precipitation occurs in case of `B` & D


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