Two well-insulated vessels are interconnected by a pipe and a valve. One vessel, whose volume is 85 L, contains oxygen at 100 kPa and 38°C, while the second, whose volume is 28 L, contains nitrogen at...

Two well-insulated vessels are interconnected by a pipe and a valve. One vessel, whose volume is 85 L, contains oxygen at 100 kPa and 38°C, while the second, whose volume is 28 L, contains nitrogen at 630 kPa and 150°C. The valve is opened and a fl ow starts. Two mixing modes are to be considered: one in which the final state will be identical in both vessels, and a second in which the valve is closed as soon as the pressures are equalized. In the latter case the final equilibrium states in each vessel will be different. For each of the mixing modes

a. Determine the final pressure, temperature, and specific volume in each vessel.

 b. Determine the partial pressures of each component in each vessel.

 c. Determine the change of entropy.