A certain mass of hydrogen gas is introduced into a vessel at room temperature, the final pressure of the gas in the vessel is

85 cm of Hg

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78 cm of Hg

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63 cm of Hg

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58 cm of Hg

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Solution

The correct option is B 78 cm of Hg
Since the pressure will equalize with the outer pressure as the gas is kept at room temperature. Hence, its pressure will be same as atmospheric pressure, that is 78 cm of Hg.

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