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What is the molality of ethy alcohol ( ...

What is the molality of ethy alcohol ( mol. wt. = 46) in aqueous solution which freezes at `- 10^(@) C ` ? ` ( K_(f)` for water 1.86 K `molality ^(-1)` )

A

3.504

B

4.567

C

5.376

D

6.315

Text Solution

Verified by Experts

The correct Answer is:
C
`( Delta T_(f))/( K_(f)) = m . Delta T_(f) =10 `
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