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If sodium sulphate is considered to be c...

If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution,the change in freezing point of water`(DeltaT_(f))`,when `0.01`mole of sodium sulphate is dissoved in `1` kg of water,is `(K_(f)=1.86Kkg mol^(-1))`

A

0.0744 K

B

0.0186 K

C

0.0372 K

D

0.0558 K

Text Solution

Verified by Experts

`Na_(2)SO_(4) rarr 2Na^(+)+SO_(4)^(2-)`. Hence, I = 3 (for complete dissociation)
`DeltaT_(f)=iK_(f)m=3xx1.86xx(0.01)/(1)=0.0588^(@)C`
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