Question

A certain sample of gas has a volume of 0.2 litres
measured at 1 atm. pressure and 0°C. At the same
pressure but at 273°C, its volume will be
(a) 0.4 litre (b) 1.4 litre
(c) 0.8 litre (d) 1.8 litre

Answer 1

a is correct answer ok friends

Answer 2

(a) 0.4 litre

Explanation:

We know from Charles Law that V₁ / T₁ = V₂ / T₂ at constant pressure.

Temperatures in K scale will be 273 K and 546 K.

Substituting the given values, we get: 0.2 / 273 = V₂ / 546

So V₂ = 0.2 * 2

     = 0.4 litres

Volume of the gas would increase to 0.4 l when the temperature is increased to 273 C at constant pressure.

Hence option A is the correct answer.