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)

the rates of forward and backward reactions are equal

If the rate of forward reaction equals rate of backward reaction, then the reaction is said to be in equilibrium. At this stage, there is no further change in the concentrations of reactants as well as products.