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The freezing point depression of a 1.00x...

The freezing point depression of a `1.00xx10^(-3)` m solution of `K_(x)[Fe(CN)_(6)]` is `7.10xx10^(-3)K`. Determine `x` given `K_(l)=1.86K kg "mol"^(-1)` for `H_(2)O`.

Text Solution

Verified by Experts

`DeltaT_(f)=ixxK_(f)xxm`
`7.10xx10^(-3)=ixx 1.86xx0.001`
`i=3.817`
`alpha=(i-1)/(n-1)`
`1=(3.817-1)/((x+1)-1)`
`x=2.817~~3`
`:.` Molecular formula of the compound is `K_(3)` `[Fe(CN)_(6)]`.
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