Answer to Question #119091 in General Chemistry for Joe

Question

The volume of a gas changes from 4.5 L to 3 L when we lower the temperature to 250 K. What must have been the initial temperature in K?

Answer 1

Solution: As a consequence of the law of Mendeleev-Clapeyron, we have: V₁/T₁=V₂/T₂. By condition:

V₂=3 L; T₂=250 K; V₁=4.5 L, then T₁=V₁*T₂/V₂=4.5*250/3=375 K.

Answer: 375 K.