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(A) When a gas is collected over water,it becomes moist and contains water vapor. The total pressure observed is the sum of the partial pressure of th

Vedclass · Accepted Answer

$P_{	ext{dry gas}} = P_{	ext{total}} - P_{	ext{water vapor}}$

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(A) When a gas is collected over water,it becomes moist and contains water vapor. The total pressure observed is the sum of the partial pressure of the dry gas and the vapor pressure of water (aqueous tension).According to Dalton's Law of Partial Pressures: $P_{	ext{total}} = P_{	ext{dry gas}} + P_{	ext{water vapor}}$.Therefore,the pressure of the dry gas is calculated as: $P_{	ext{dry gas}} = P_{	ext{total}} - P_{	ext{water vapor}}$.

Write the formula to calculate the pressure of a dry gas collected over water.

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