Question

Below is the data from a gas law experiment comparing the pressure and the volume of a gas at a given temperature.


Which graph best shows the relationship between pressure and volume?

Answer 1

Boyle’s law applies: at constant temperature P ∝ 1/V (PV = constant). So the correct graph of P vs V is a downward-curving hyperbola (pressure falls as volume increases).

(If you plot P against 1/V instead, you get a straight line through the origin.)