Last modified: Mon 07/25/2016 05:08:31 pm ACA

It is OK to use your textbook or lecture notes from class, but if you can answers the questions without it that is OK too.

Do not press the RETURN or ENTER key while you are answering these questions. Your browser will interpret either the same as clicking on the Submit key.

Answer all of the questions below. If you do not know an answer enter CNA. However, it will help me the most if you answer each question with your best intuition/idea about what would be a reasonable answer.


First Name:

Last Name:

School:

1. Given the reaction

3H2(g) + N2(g) 2NH3(g)

is at equilibrium at 297 K, predict the direction (left to right, or right to left) the reaction will proceed to re-establish equilibrium when each of the following stresses disturb the equilibrium. The H° for the reaction is -92.2 kJ mol-1.

a) nitrogen is removed from the reaction container

b) ammonia is removed from the reaction container

c) the volume of the reaction is doubled

d) the temperature of the reaction is lowered

2. The formation of ammonia has a H° of -92.2 kJ mol-1.

3H2(g) + N2(g) 2NH3(g)

At 24.0 °C, K for the reaction is 6.5 x 105. Calculate the temperature when K = 4.3 x 104. Note: Use the relationship ln(K2/K1) = -( H°/R)(1/T2 - 1/T1)

T = °C

3. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

4. If there is one question you would like to have answered in lecture, what would that question be?