0.300 L of H₂ gas was collected over water at 27.0°C on a day when the atmospheric pressure was 745 torr. What would be the volume of H₂ gas at 760 torr after the water vapor was removed? (P_H₂_O = 27.0 torr at 27°C)

Question

Quizplus · Accepted Answer

First, subtract the water vapor pressure from the total pressure to find the pressure of the gas alone. Then, use the ideal gas law in the form of P1V1=P2V2 to calculate the new volume at standard pressure, accounting for the removal of water vapor.

0300 L of H2 Gas Was Collected Over Water at 27.0°C

0300 L of H₂ Gas Was Collected Over Water at 27.0°C