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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

128.8

B

64.4

C

32.2

D

257.6

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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:

The vapour pressure of water at 20^(@)C is 17.54mm . When 20g of non - ionic substance is dissolved in 100g of water, the vapour pressure is lowered by 0.30mm . What is the molecular mass of the substance ?

Knowledge Check

  • 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:

    A
    `64`
    B
    `128`
    C
    `488`
    D
    `32`

  • The vapour pressure of acetone at 20^(@)C is 185 torr. When 1.2 g of a non-volatile substance was dissolved in 100 g of acetone at 20^(@)C, its vapour pressure was 183 torr. The molar mass (g mol-') of the substance is :

    A
    128
    B
    488
    C
    32
    D
    64

  • The vapour pressure of acetone at 20^(@)C is 185 torr. When 1.2 g of a non-volatile was dissolved in 100 g of acetone at 20^(@)C , its vapour pressure was 183 torr. The molar mass ( "g mol"^(-1) ) of the substance is

    A
    128
    B
    488
    C
    32
    D
    64