Question

A gas occupies a volume of 800 cm³ at a pressure of 76 cm of mercury. If the pressure is increased to 80 cm of mercury at the same temperature, the volume of the gas would now be ______.

Options

• 760 cm³

• 76 cm³

• 800 cm³

• 80 cm³

Answer 1

A gas occupies a volume of 800 cm³ at a pressure of 76 cm of mercury. If the pressure is increased to 80 cm of mercury at the same temperature, the volume of the gas would now be 760 cm³.

Explanation:

PV = nRT

PV = Constant [As T is constant]

P₁V₁ = P₂V₂

76 × 800 = 80 × V²

V² = 760 cm³.