Question

Vapour pressure of CH CI and CH,C1, are 540 mm Hg and 402 mm Hg respectively. 101 g of
CH,CI and 85 g of CHCl, are mixed together. Determine
(0) The pressure at which the solution starts boiling,
(i) Molar ratio of solute v/s solvent in vapour phase in equilibrium with solution.
Boiling occurs when external pressure becomes equal to the vapour pressure. So, the boiling
pressure = V.P. of solution
​

Answer 1

Answer:

Vapour pressure of chloroform (CHCl3) and dichloromethane (CH2CI2) at 25oC are 200 mmHg and 41.5 mmHg respectively. Vapour pressure of the solution obtained 545

Explanation:

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