Question

How can equilibrium of a closed system chemical reaction be disturbed? Select all that apply.

Adding or removing products or reactants.
Keeping the concentration of products and reactants the same.
Keeping the temperature of the system constant.
Changing the volume of the system.
Changing the temperature of the system.

Answer 1

Because the system is closed, mass cannot be added or subtracted from it. The answer is:

Changing the volume of the system
Changing the temperature of the system

Answer 2

The correct answers are :

Changing the volume of the system.

Changing the temperature of the system.

Equilibrium will remain unaffected if the concentration of products and reactants are kept the same, and the temperature of the system is kept constant.

As the system is closed, we cannot add or remove products or reactants.

Change in temperature will shift the chemical equilibrium towards the reactant or product depending on whether the reaction is exothermic or endothermic.

Also change in volume will shift the chemical equilibrium of a chemical reaction if the reactants or products or both are gases.