Question

An exothermic process going from state A to state B. What happens to the process when the temperature is increased?

• A. From state A to state B
• B. From state B to state A
• C. Remains at state A
• D. Remains at state B

Answer 1

The correct option is B From state B to state A

To understand this we have to understand what is Le Chatelier’s principle.

Le Chatelier’s principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change to reestablish an equilibrium.

So let’s apply Le Chatelier principle in the above question.

So according to Le Chatelier’s principle, as the energy gets released in the above mentioned process (exothermic process), by supplying energy to the system the process goes back, i.e from state B to state A. Here we supply the heat energy by increasing the temperature. So process moves in reverse direction.