Question

When the pressure on 1200 ml of a gas in increased from 70 cm to 120 cm of mercury at constant temperature, the new volume of the gas will be

• A. 700 ml
• B. 600 ml
• C. 500 ml
• D. 400 ml

Answer 1

Answer: (A)

700 ml

Answer 2

At constant temperature PV = constant

̃ $\frac{P_{1}}{P_{2}} = \frac{V_{2}}{V_{1}}$ ̃ $\frac{70}{120} = \frac{V_{2}}{1200}$̃ V₂ = 700 ml.