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The freezing point of a solution con...

The freezing point of a solution containing 4.8 g of a compound in 60 g of benzene is `4.48 ^(@) C `. What is the molar mass of the compound ? `(K_(f)=5.1 Km^(-1)`, freezing point of benzene `=5.5^(@)C `)

A

100

B

200

C

300

D

400

Text Solution

Verified by Experts

The correct Answer is:
D
`m=(K_(f)xx1000xxw)/(W xx Delta T_(f))=(5.1xx1000xx4.8)/(60xx1.02)=400`.
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