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Why cooling is caused by evaporation?...

Why cooling is caused by evaporation?

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As explaind in problem 13, evaporation occurs on account of faster molecules escaping from the surface of the liquid. The liquid is, therefore, left with molecules having lower speeds . The decrease in the averaged speed of the molecules results in lowering the temperature. That is why cooling is caused by evaporation.
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PRADEEP-BEHAVIOUR OF PERFECT GAS & KINETIC THEORY-Conceptual Problems
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  5. Two different gases at the same temperature have equal root mean squar...

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  6. Distinguish between average speed and rms speed. If three molecules ha...

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  7. A gas is filled in a cylinder fitted with a piston at a definite tempe...

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  8. A gas is filled in a cylinder fitted with a piston at a definite tempe...

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  9. On reducing the volume of the gas at constant temperature, the pressur...

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  10. Explain the phenomenon of evaporation on the basis of kinetic theory.

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  11. Why cooling is caused by evaporation?

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  12. The rms speed of oxygen molecules at a certain temperature T is v. If ...

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  13. A vessel of volume 4 litres contains a mixture of 8 grams of O(2), 14 ...

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  14. Why temperature less than OK is not possible ?

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  15. The ratio of vapour densities of two gases at the same temperature is ...

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  16. How can the number of molecular collisions per unit time in a gas be i...

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  17. On which factors does the average KE of gas molecules depend : nature ...

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  18. What happens when a compressed gas pushes a piston out and expands ?

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  19. Though the velocity of air molecules is nearly 0.5 km//s, yet the smel...

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  20. There are N molecules of a gas in a containter. If this number is incr...

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