Answer to Question #319360 in General Chemistry for Davzz

Question

A system has constant volume (ΔV=0) and the heat around the system increases by 50 J.

What is the sign for heat (q) for the system?

What is ΔU equal to?

What is the value of internal energy of the system in Joules?

Answer 1

Since the system has constant volume (ΔV=0) the term -PΔV=0 and work is equal to zero. Thus, in the equation ΔU=q+w w=0 and ΔU=q. The internal energy is equal to the heat of the system