A Level Chemistry 9701/13/O/N/19 Q33

Question

Liquids X and Y do not react with one another. They have identical boiling points.
When a particular volume of X is shaken with a similar volume of Y, they form a liquid mixture Z.
The average intermolecular forces in liquid Z are stronger than the average of the forces in X and the forces in Y.
Which deductions from this information are correct?
1 The mixing of X and Y is exothermic.
2 The vapour pressure of liquid Z will be less than that of either liquid X or liquid Y at the same temperature.
3 The boiling point of liquid Z will be lower than that of either liquid X or liquid Y at the same pressure.

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    2021-06-27T14:28:18+08:00

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