Question

Volume of a balloon at 25°C and 1 bar pressure is 2.27 L. If the pressure of the gas in balloon is reduced to 0.227 bar, what is the rise in volume of a gas?

Options

• 10.227 L

• 7.73 L

• 12.27 L

• 10 L

Answer 1

7.73 L

Explanation:

P₁ = 1 bar

P₂ = 0.227 bar

V₁ = 2.27 L

V₂ = ?

According to Boyle's Law, P₁V₁ = P₂V₂

∴ V₂ = `("P"_1"V"_1)/"P"_2`

= `(1 xx 2.27)/0.227`

= 10 L

∴ The rise in volume of gas = 10 − 2.27 = 7.73 L