Question

A flask is filled with 13 gm of an ideal gas at 27°C and its temperature is raised to 52°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is 

(a) 2.5 g 

(b) 2.0 g 

(c) 1.5 g 

(d) 1.0 g

Answer 1

Correct option (d) 1.0 g

Explanation:

PV ∝ Mass of gas x Temperature

In this problem pressure and volume remains constant so M₁ T₁ = M₂T₂ = constant

i.e. the mass of gas released from the flask = 13 gm – 12 gm = 1 gm.