Home
Class 12
CHEMISTRY
When certain amount of an organic compou...

When certain amount of an organic compound is dissolved in acetone, its boliling point increase by `0.34^@C`. If `K_b` for acetone is `17.0^@C` kg `mol^-1`, then find the molality of the solution.

A

0.1 molal

B

0.2 molal

C

0.01 molal

D

0.02 molal

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

At certain Hill-station pure water boils at 99.725^(@)C . If K_(b) for water is 0.513^(@)C kg mol^(-1) , the boiling point of 0.69m solution of urea will be:

A solution contains 0.524 g of camphor ( molar mass = 152 g/ mol dissolved in 36.8 g of ether (boiling point =34.6^(@) C) . The molal elevation constant per 100 g of ether is 19.4 K kg mol ^(-1) . The boiling point of the solution is _______.

Pure water boils at 99.725^(@)C at Shimla. If K_(b) for water is 0.51 K mol^(-1) kg the boiling point of 0.69 molal urea solution will be:

1.22 g of benzoic acid is dissolved in 100 g of acetone and 100 g of acetone seperately. Boiling point of the solution in acetone increases by 0.17^(@) C, while that of solution, in benzene increases by 0.13^(@) C , K_(b) for acetone and benzene is 1.7 K kg mol^(-1) and 2.6 K kg mol^(-1) . Find molecular weight of benzoic acid in two cases. Hence, find their sum.

0.70 g of an organic compund when dissolved in 32g of acetone produces in an elevation in boiling point of 0.25^(@)C . Calculate the molecular mass of the organic compound. (K_(b)" for acetone "=1.72 K kg mol^(-1)) .

1.22 g of benzoic acid is dissolved in acetone and benzene separately. Boiling point of mixture with acetone increase by 0.17^(@)C and boiling point of mixture with benzene increases by 0.13^(@)C . K_(b) ("acetone")=1.7 K kg "mol"^(-1) , Mass of acetone = 100 g , K_(b) ("benzene")=2.6 k Kg mol^(-1) , Mass of benzene = 100 g , Find molecular weight of benzoic acid in acetone and in benzene solution. Justify your answer with structure.

Calculate the boiling point of a solution containing 0.45g of camphor (mol. wt. 152) dissolved in 35.4g of acetone (b.p 56.3^@C ), K_b per 100 gm of acetone is 17.2^@C