Change in equilibrium concentration?

Question

COnsider the following reaction:

2SO2 (g) + O2(g) <-----> 2SO3 (g) + 191 KJ

Which of the following changes will increase the equilibrium concentration of SO2(g)?

[a] Decrease of volume

[b] Increase the temperature

[c] Add oxygen

[d] Add a catalyst

[e] None of the above

Answer 1

B: the equilibrium will shift to minimise the change. The forward reaction is exothermic therefore the reverse reaction must be endothermic. This means the reverse reaction will be favoured thus more SO2 will be produced. I think : )

Answer 2

The answer is &#039;b&#039;, Increase the temperature. All the other processes will drive the reaction towards the right except for &#039;d&#039;, add a catalyst which will effect both forward and reverse reactions equally. Increasing the temperature will drive the reaction to the left because of the reason stated by the other answerer...