Question

1. If the pressure of 180cm3 of a sample of air is halved at constant temperature, what will be its new volume?

Answer 1

According to Boyle's Law, the Volume of a gas is directly proportional to the temperature when Temperature and amount of substance is constant. This means that,

${P_1×V_1}= {P_2×V_2}$

since P₂ = 1/2 P₁

V₁ = 180cm³

$P_1×180= \dfrac{P_1}2 ×V_2$

360 = V₂

V₂ = 360cm³

Therefore, the sample of air has a new volume of 360cm³.