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12.2gm benzoic acid (M =122) in 100g H(2...

`12.2gm` benzoic acid `(M =122)` in `100g H_(2)O` has elevation of boiling point of `0.27^(@)C, K_(b) = 0.54 K` kg/mole. If there is `100%` dimerization the no.of molecules of benzoic acid in associated sate is:

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
`0.27 =ixx(0.1)/(100) xx 1000 xx 0.54`
`i=(1)/(2)`
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