1.

Which onc of the following salts will have the same value of van't Hoff factor (i) as that of K_(4)[Fe(CN)_(6)].

Answer»

`Al_(2)(SO_(4))_(3)`
`NaCl`
`AL(NO_(3)) _(3)`
`Na_(2) SO_(4)`

Solution :`K _(4)[Fe(CN) _(6)] and Al _(2) (SO _(4)) _(3)` both dissociates to GIVE 5 ions or `i=5`
`K_(4)[Fe(CN)_(6)] HARR 4K^(+) + [Fe (CN)_(6) ] ^(4-)`
and ` Al_(2) (SO_(4)) _(3) hArr 2Al ^(3**) . 2SO _(4) `


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