A gas is collected over water at a certain temperature, then the partial pressure of gas is calculated to be = 741 torr
The term "water vapor pressure" refers to the amount of water vapor present in any gas combination that is in equilibrium with either solid or liquid water. When the vapor pressure equals the atmospheric pressure, water begins to boil.
Given total pressure is 760 torr
Vapor pressure of water = 17 torr
As we know that, partial pressure of gas = total pressure - vapor pressure of water
= 760 - 17
Partial pressure of gas = 741 torr.
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