1. The problem statement, all variables and given/known data I have a system which is at X degree celcius. I decide to put in a heater which will heat the system up by 10 degree celsius and will keep supplying this much heat. The reaction taking place is: A + B --> C + D (it's a reversible reaction) (enthalpy change is negative-> Exothermic) I know the reaction will move to the left, but will the temperature of the system be X? Or X + 10? I mean the reaction is moving backwards in order to eliminate these disturbance in temperature, will it succeed in lowering the temperature to X? Or will it just keep trying by continuously favouring the backward reaction? 3. The attempt at a solution I formulated this question myself because of my misunderstanding.