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Standard XII

Chemistry

Depression in Freezing Point

Ethylene dibr...

Question

Ethylene dibromide and 1,2 dibromopropane forms a series of Ideal solutions over the whole range of composition. At 85 degree Celsius the vapour pressures of these two liquids are 173 and 127 torr respectively. What would be the mole fraction of Ethylene dibromide in a solution at 85 degree Celsius equilibrate with 1:1 molar mixture in the vapour.

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