1.

`1g` of water changes from liquid to vapour phase at constant pressure of `1` atmosphere, the volume increases from `1 mL` to `1671 mL`. The heat of vaporisation at this pressure is `540 cal//g`. Find the: (a) Work done (in `J`)during phase change. (b) Increase in internal energy of water.

Answer» Correct Answer - (a)`-168.67 J,(b)2088.53 J`;


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