Liters and kPa

Question

Boyle’s law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 10L, the pressure is 76kPa. What is the volume when the pressure is 40kPa

Answer 1

Yes, Boyle's Law does state that the volume of an ideal gas varies inversely with the pressure at CONSTANT TEMPERATURE and constant number of moles.

 

Thus the relationship P₁V₁ = P₂V₂ holds.

P₁ = 76 kPa

V₁ = 10 L

P₂ = 40 kPa

V₂ = ?

(76 kPa)(10 L) = (40 kPa)(x L)

x = (76)(10)/40 

x = 19 L (2 significant figures)