Q.

A dry gas occupies 125cm3 at STP. If the same gas is collected over water at 27°C at a total pressure of 750 Torr, the volume occupied by the gas is (Given:aqueous tension of water at 27°C is 25 Torr.)

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Detailed Solution

Let pressure of dry gas P2 =Pmoist - aq.tension = 750 -25 = 725 torrV2 =144 cm3

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A dry gas occupies 125cm3 at STP. If the same gas is collected over water at 27°C at a total pressure of 750 Torr, the volume occupied by the gas is (Given:aqueous tension of water at 27°C is 25 Torr.)