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A liquid is inequilibrium with its vapur in a sealed container at a fixed temperature. The volume of the container is suddentlyincreases. (a)What is the intial effect of the change on vapour pressure ? (b) How do rates of evaporation and consideration change intially ? (c) What happens when equilibrium is restored finally and what will be the final vapour pressure ?

Answer» <html><body><p></p>Solution :(a) Intially, the vapour pressure will decrease because the same account of vapour are now distributed in larger space. <br/> (b) The <a href="https://interviewquestions.tuteehub.com/tag/rate-1177476" style="font-weight:bold;" target="_blank" title="Click to know more about RATE">RATE</a> of <a href="https://interviewquestions.tuteehub.com/tag/evaporation-16312" style="font-weight:bold;" target="_blank" title="Click to know more about EVAPORATION">EVAPORATION</a> <a href="https://interviewquestions.tuteehub.com/tag/remains-621920" style="font-weight:bold;" target="_blank" title="Click to know more about REMAINS">REMAINS</a> constant at constant temperature in a closed vessel 9discussed in unit 5 under vapur pressure. ). However, the rate of condensation will be low <a href="https://interviewquestions.tuteehub.com/tag/initially-516121" style="font-weight:bold;" target="_blank" title="Click to know more about INITIALLY">INITIALLY</a> because there are fever molecules per unit volume in the vapour phase and hence the number ofcollisions per unit time with the liquid surface <a href="https://interviewquestions.tuteehub.com/tag/decreases-946143" style="font-weight:bold;" target="_blank" title="Click to know more about DECREASES">DECREASES</a>. <br/> (c ) When equilibriumis restored , rate of evaporation = rate of consensation . The final valour pressure will be same as it was originally because vapour pressure of a liquid depends only on temperature and not volume.</body></html>


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