Gas Laws Chemistry

Question

A sample of air has a volume of 105 mL at 59 ◦C. At what temperature will its volume be 45 mL at constant pressure?

Answer 1

We will use Charles' Law:

V₁/T₁ = V₂/T₂

Define the variables:

V₁ = 0.105 L (My preference is get everything in the units of the gas constant R)

T₁ = 59 + 273 = 332 K

V₂ = 0.045 L

T₂ = ?

Solve for T₂

V₁/T₁ = V₂/T₂

T₂ = V₂T₁/ V₁ = 0.045 L(332 K)/ 0.103 L) = 145 K