A vessel containing 5 litres of a gas at 0.8 m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside will be

Q: A vessel containing 5 litres of a gas at 0.8 m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside will be (assuming whole system to be isolated)

(a) 4/3 m

(b) 0.5 m

(c) 2. 0 m

(d) 3/4 m

Ans: (b)

Sol:P₁ V₁ = P₂ V₂

0.8 × 5 = P₂ × (5 + 3)

P₂ = 0.5 m