### deltaG and deltaS(sys) at zero

Posted:

**Tue Feb 13, 2018 12:14 pm**A sample of 1 mole of gas initially at 1 atm and 298 K is heated at constant pressure to 350 K, then the gas is compressed isothermally to its initial volume and is then cooled to 298 K at constant volume.

Why are deltaS(sys) and deltaG zero in this case? Which equations would you use to figure what factors are at zero?

Why are deltaS(sys) and deltaG zero in this case? Which equations would you use to figure what factors are at zero?