A gas occupies a volume of 1.5 liters at a pressure of 2 atmospheres. If the pressure is increased t

JAMB Chemistry 2023 70 views

A gas occupies a volume of 1.5 liters at a pressure of 2 atmospheres. If the pressure is increased to 4 atmospheres while the temperature remains constant, what will be the new volume of the gas?

  1. 0.75 liters ✓
  2. 1.5 liters
  3. 3 liters
  4. 6 liters

Explanation

Use Boyle’s Law: P₁V₁ = P₂V₂. So 2 atm × 1.5 L = 4 atm × V₂. Solving gives V₂ = 3 ÷ 4 = 0.75 L.

When pressure doubles, volume halves. When pressure increases, volume decreases. They are inversely related.

Remember: Boyle’s Law works when temperature stays constant. More pressure means less volume.

pastquestions.ng