When CH_4 gas is collected over water,the tot | vedclass

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(D) According to Dalton's Law of Partial Pressures,the total pressure of a gas collected over water is the sum of the pressure of the dry gas and the

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$705$

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(D) According to Dalton's Law of Partial Pressures,the total pressure of a gas collected over water is the sum of the pressure of the dry gas and the vapor pressure of water.$P_{total} = P_{dry} + P_{water \ vapor}$Given:$P_{total} = 735 \ torr$$P_{water \ vapor} = 30 \ torr$Substituting the values:$735 = P_{dry} + 30$$P_{dry} = 735 - 30 = 705 \ torr$Therefore,the pressure exerted by the dry methane gas is $705 \ torr$.

When $CH_4$ gas is collected over water,the total pressure is $735 \ torr$ and the temperature is $292 \ ^\circ C$. If the vapor pressure of water at $292 \ ^\circ C$ is $30 \ torr$,then the pressure exerted by the dry methane gas will be .......... $torr$.

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