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The vapor pressure of acetone at 20^(@)C...

The vapor pressure of acetone at `20^(@)C` is 185 torr. When `1.2 g` of a non-volatile solute was dissolved in `100 g` of acetone at `20^(@)C`, it vapour pressure was 183 torr. The molar mass `(g mol^(-1))` of solute is:

A

`32`

B

`64`

C

`128`

D

`488`

Text Solution

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The correct Answer is:
B
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The vapor pressure of acetone at 20^(@)C is 185 torr. When 1.2 g of a non-volatile solute was dissolved in 100 g of acetone at 20^(@)C , it vapour pressure was 183 torr. The molor mass (g mol^(-1)) of solute is:

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