The vapour pressure of a moist gas at 100oC is 750mm and the aqueous tension at the same temperature is 10mm. The vapour pressure of the dry gas is :
750 mm
760 mm
740 mm
720 mm
A
760 mm
B
720 mm
C
750 mm
D
740 mm
Open in App
Solution
Verified by Toppr
Some gases are collected over water in the laboratory.
During collection, the gas gathers water vapours and becomes moist.
The partial pressure exerted by the water vapours is called the aqueous tension.
Pressure of dry gas = pressure of moist gas - aqueous tension
=750−10=740mm
Therefore, the option is C.
Was this answer helpful?
2
Similar Questions
Q1
The vapour pressure of a moist gas at 100oC is 750mm and the aqueous tension at the same temperature is 10mm. The vapour pressure of the dry gas is :
View Solution
Q2
The pressure of moist gas at a given temperature is 10 mm Hg at volume V. Aqueous tension at this temperature is 3 mm Hg. Find the final pressure of gas at the same temperature if the volume is reduced to 1/3 of the original volume.
View Solution
Q3
The pressure of moist gas at a given temperature is 10 mm Hg at volume V. Aqueous tension at this temperature is 3 mm Hg point the final pressure of gas at the same temperature if the volume is reduced to 1/3 original volume is:
View Solution
Q4
A certain quantity of a gas occupies 100mL when collected over water at 15∘C and 750mm pressure. It occupied 91.9mL in dry state at NTP. Find the aqueous vapour pressure at 15∘C.
View Solution
Q5
50cm3 of hydrogen is collected over water at 17oC and 750 mm Hg pressure. Calculate the volume of dry gas at S.T.P.