Answer
A tank that contains moist air at 3atm is located in moist air that is at 1atm. The driving force for moisture transfer is the vapor pressure difference, and thus it is possible for the water vapor to flow into the tank from surroundings if the vapor pressure in the surrounding is greater than the vapor pressure in the tank.
Work Step by Step
A tank that contains moist air at 3atm is located in moist air that is at 1atm. The driving force for moisture transfer is the vapor pressure difference, and thus it is possible for the water vapor to flow into the tank from surroundings if the vapor pressure in the surrounding is greater than the vapor pressure in the tank.