A total of 5 moles of gas react together to produce 4 moles of gas. They are at equilibrium and the process is exothermic. It may be given as follows:
2 A (g) + 3 B (g) <- -> 2 C (g) + 2 D (g)
In what direction, right or left, will the equilibrium shift given the following circumstances? Justify what you think will happen.
1. The container is expanded at a constant temperature.
2. Some of the mass of one of the products is removed.
3. The temperature of the system is raised.
4. One of the products (e.i. steam) is absorbed by a solid that was added to the system.