Partial pressure equals vapour pressure if it is___________
Explanation: At saturation, the vapour-gas mixture will be at equilibrium so the vapour pressure equals partial pressure.
Say True or False
I) Vapour- at superheated temperature
II) Gas – at condensation temperature
Explanation: Since vapour has liquid portion we cannot say superheated. Superheated means free from other component like unique gas.
Guess the saturated molar absolute humidity of the gas(A.- Vapour(B. mixture at 100 degree Celsius. Vapour pressure of A is 300 mmHg and the total pressure is 760 mmHg.
Explanation: Saturated molar humidity= Vapour pressure of A/ Vapour pressure of B
= 300/(760-300) =0.65.
The system is unsaturated if partial pressure _________ equilibrium vapour pressure.
Explanation: If saturated, the vapour pressure equals partial pressure. If unsaturated, the pressure will be less than vapour pressure.
Consider a saturated gas(A.-vapour(B. mixture , if the absolute molal humidity is 0.265 and the total pressure= 760 mmHg. Find the vapour pressure of B.
Explanation: First, we have to find the vapour pressure of A.
The vapour pressure of the nitrogen gas is 400mmHg and the partial pressure is 300mmHg. Find the relative saturation.
Explanation: Relative saturation or relative humidity = (partial pressure/vapour pressure. x100
Thermometer measurement temperature is
Explanation: Dry bulb temperature is the actual measuring temperature of the thermometer.
Find the dew point
Explanation: The point at 100% saturation is known as dew point. Below the point, the vapour starts to condense.
Temperature at which the partial pressure of the gas-vapour mixture equals vapour pressure _______
Explanation: At saturation, the vapour pressure equals partial pressure. At dew point, saturation attains.
Check whether we get approximately 80% saturation if the total pressure and the partial pressure of the gas mixture is 760 mmHg and 260 mmHg. Also the vapour pressure is 300 mmHg.
Explanation: Percentage saturation is the ratio of absolute molal humidity to the saturated molal humidity. Absolute molal humidity= 260/(760-260. =0.52. Saturated molal humidity= 300/(760-300 =0.652.
%saturation= 0.52/0.652= 79.8(Approximately 80.