Question

A container with no insulation has two compartments. The first compartment is evacuated to zero pressure, and the other contains a compressed gas that is not an ideal gas. Suppose that the separation between the two compartments is removed. What type of process is this?
a. isovolumetric
b. isothermal
c. isobaric
d. adiabatic

Answer 1

An isochoric process, also called a constant-volume process, an isovolumetric process, or an isometric process, is a thermodynamic process during which the volume of the closed system undergoing such a process remains constant. Since in the process the volume of the container did not change then it is an isovolumetric

Answer 2

IsoTHERMAL. In this scenario there will be no change in temperature, only the sudden pressure transfer. This is tricky because the seperated chambers are now connected and can equalize in pressure. So isovolumetric is a very questionable choice here.