I am given 2NH3(g) + 2.5O2(g) ⇌ 2NO(g) + 3H2O(g)+heat. By using Le Chatelier's principle, describe and explain four ways in which an industrial chemist could increase the yield of nitrous oxide.
The Attempt at a Solution
For 2NH3(g) + 2.5O2(g) ⇌ 2NO(g) + 3H2O(g) + heat
This is an unbalanced equation first off let’s balance it. If we multiply both sides by two it will be balanced giving us:
4NH3(g) + 5O2(g) ⇌ 4NO(g) + 6H2O(g) + heat
Now to make it easier let:
A=4NH_3(g) B=5O_2(g) C=4NO(g) D=6H2O(g)
1. If heat is removed from the product by cooling it down, the system will shift right in order to make up for the missing product (the heat which can be viewed as a product in the system), in turn adding more products which will yield to an increase in the products molecules. This can be viewed as a reverse reaction.
For example: ↓A + ↓B ⇌ ↑C + ↑D
2. If we add more A there will be a forward shift causing an increase in C and D there will be a shift forward (right) in turn making more product. This occurs because the system is trying to re-establish equilibrium by adding re balancing it’s self by adding more product.
For example: A + ↓B ⇌ ↑C + ↑D+heat
If we add more A and more B there will be even more of an increase in C and D there will be a shift forward (right) in turn making more product. This occurs because the system is trying to re-establish equilibrium by adding re balancing it’s self by adding more product.
For example: A + B ⇌ ↑↑C + ↑↑D+heat
3. If we decrease the pressure on the system it will respond by going right since there are 9 moles on the reactants side and 10 moles on the products side.
For example: ↓A + ↓B ⇌ ↑C + ↑D+ heat
4. If we remove D the system will respond by shifting forward (right) to counteract the removal of D the system will create more products resulting in more C in order to re-establish equilibrium.
For example: A + B ⇌ ↑C + ↑heat
Do I have a good understanding of Le Chatelier's principle? or am I missing something here. For some reason I feel like there is something missing it could be due to my lack of practice. Any advice would be helpful, thanks.