# What is an example of a Le Chatelier's principle practice problem?

Jun 1, 2015

Le Chatelier's principle states that when a chemical system that is at equilibrium is disturbed by a stress, the system will respond in order to relieve the stress.

Sample Question:

For questions 2-5, consider the reaction:

$F e 2 O 3 \left(s\right) + 3 H 2 \left(g\right) \to 2 F e \left(s\right) + 3 H 2 O \left(g\right)$

1. The equilibrium concentrations under certain conditions were found to be [H2O] - 1.0 mole [H2] - 2.5 mole

What is the value for K?

a. 0.40 b. 0.064 c. 15.6 d. Insufficient information to calculate.

Use the following choices to indicate the effect of each of the following stresses on the position of this

system at equilibrium:

(A) Shift left (B) Shift right (C) No change (D) Not possible to predict

1. Decrease the volume of the container.

2. remove Fe2O3(s)