Question

A chemical reaction is at equilibrium when

• A. Reactants are completely transformed into products
• B. The rates of forward and backward reactions are equal
• C. Formation of products is minimised
• D. Equal amounts of reactants and products are present

Answer 1

Answer: (B)

A chemical reaction is in a state of equilibrium when the concentrations of the reactants and products do not change with time. This state is achieved when the rate of the forward reaction is equal to the rate of the backward reaction