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At a fixed temperature, a liquid is in e...

At a fixed temperature, a liquid is in equilibrium with its vapours in a closed vessel. Which measurable quantity for the liquid gets fixed at equilibrium?

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When a liquid remains in equilibrium with its vapours in a closed vessel at a particular temperature, the vapour pressure of the liquid is found to acquire a fixed value.
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CHHAYA PUBLICATION-EQUILIBRIUM-QUESTION ANSWER ZONE FOR BOARD EXAMINATION (very short answer type)
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