1. A vessel initially containing 1 kmol of CO and 4.76 kmol of dry air forms an equilibrium mixture of CO2, CO, O2, and N2 at 3000 K, 1 atm. Determine the equilibrium composition.

2. A vessel initially containing 1 kmol of O2, 2 kmol of N2, and 1 kmol of Ar forms an equilibrium mixture of O2, N2, NO, and Ar at 2727°C, 1 atm. Determine the equilibrium composition.

3. One kmol of CO and 0.5 kmol of O2 react to form a mixture at temperature T and pressure p consisting of CO2, CO, and O2. If 0.35 kmol of CO is present in an equilibrium mixture when the pressure is 1 atm, determine the amount of CO present in an equilibrium mixture at the same temperature if the pressure were 10 atm.

4. A vessel initially contains 1 kmol of H2 and 4 kmol of N2. An equilibrium mixture of H2, H, and N2 forms at 3000 K, 1 atm. Determine the equilibrium composition. If the pressure were increased while keeping the temperature fixed, would the amount of monatomic hydrogen in the equilibrium mixture increase or decrease? Explain.

5. Dry air enters a heat exchanger. An equilibrium mixture of N2, O2, and NO exits at 3882°F, 1 atm. Determine the mole fraction of NO in the exiting mixture. Will the amount of NO increase or decrease as temperature decreases at fixed pressure? Explain.