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How maby grams of methyl alcohol should ...

How maby grams of methyl alcohol should be added to 10 litre tank of water to prevent its freezing at `268K`?
`(K_(f)` for water is `1.86 K kg mol^(-1))`

A

`899.04g`

B

`886.02g`

C

`868.06g`

D

`880.07g`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaT_(f) = K_(f) xx m`
`5 = 1.86 xx (W_(A))/(32 xx 10)`
`W = (5 xx 32 xx 10)/(1.86)`
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