# Thermo Concept Questions

1. Nov 28, 2011

### wvcaudill2

1. The problem statement, all variables and given/known data
Hey, I was wondering if I could get some help verifying my answers for these general thermodynamics concept questions. Thanks!

1. A reversible reaction is at equilibrium at constant pressure and temperature if the free energy of the system ______________.

2. Heat absorbed by a system at constant volume is equal to ______________.

3. The entropy of fusion of a substance is always smaller than its entropy of vaporization.
True or False​

4. The internal energy of a substance can be brought to zero by cooling the substance all the way down to absolute zero (0 K).
True or False​

2. Relevant equations
E=q+w
q=mc$\Delta$T
w=-P$\Delta$T
$\Delta$G=$\Delta$H-T$\Delta$S

3. The attempt at a solution
1. is zero
2. $\Delta$E
3. True
4. True