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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 dissociated in 1 kg of water is : (`K_(f) = 1.86` K kg `mol^(-1)`)

A

0.0744K

B

0.0186

C

0.0372

D

0.0558

Text Solution

Verified by Experts

The correct Answer is:
D
`"For" Na_(2)SO_(4)" "i=3(100%"dissociation")`
`DeltaT_(f)=K_(f)xx"Molality"xxi`
`=1.86xx3xx(0.01)/(1)`
`=0.0558`
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