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What is the molality of ethyl alcohol (m...

What is the molality of ethyl alcohol (molar mass = 46) in aqueous solution which freezes at `-10^(@)C`:
`K_(f)`for water = `1.86 K "molality"^(-1)`

A

`3.540`

B

4.567

C

5.376

D

6.315

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta T_(f) = K_(f) xx m,`
`:.10 = 1.86 xx m ` or ` m=5.376`
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