A certain quantity of gas occupies 50 mL when collected over water at 15- C and 750 mm pressure- It occupies 45-95 mL in the dry state at NTP- Find the partial pressure of water vapour at 15- C-

A certain quantity of a gas occupies 100ml when collected over water at 15 $^{\circ}$ C and 750mm pressure. If it occupies 91.9ml in dry state at STP. Find the vapour pressure of water at 15 $^{\circ}$ C.

Q. A given mass of a gas occupies 919 mL volume in dry state at STP. Same mass of the gas collected over water at

15^{\circ}

C & 750 mm of pressure occupies a volume of 1 L. Calculate vapor pressure of water at

15^{\circ}

1.22 g

of a gas measured over water at

15^{\circ} C

and a pressure of

775 m m

of mercury occupied

900 m L

. Calculate the volume of dry gas at NTP. Vapor pressure of water at

15^{\circ} C

14 m m

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A certain quantity of gas occupies 50 mL when collected over water at 15∘C and 750 mm pressure. It occupies 45.95 mL in the dry state at NTP. Find the partial pressure of water vapour at 15∘C.

The correct option is C P=13.3mmV1=50mL V2=45.95mLP1=750−x P2=1atm=760mmT1=273+15=288K T2=273KP1V1T1=P2V2T2(750−x)×50288=760×45.95273∴x=13.3mmHence, the correct option is A

A certain quantity of gas occupies 50 mL when collected over water at $15^{\circ} C$ and 750 mm pressure. It occupies 45.95 mL in the dry state at NTP. Find the partial pressure of water vapour at $15^{\circ} C$ .