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JEE Main Chemistry question

ChemistrySolutionsJEE Main

At the vapour pressure in torr, of methyl alcohol-ethyl alcohol solutions is represented by the equation , where is mole-fraction of methyl alcohol, then the value of is:

Answer: (A)

Solution

By Raoult's law the partial pressure of A is , so for all , i.e. the pure-component vapour pressure of

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Question ID VK-143326