Which of the following statements about an equilibrium system is correct?

  • A Forward and backward reactions occur at the same rate
  • B The concentrations of reactants must equal that of the products
  • C The concentrations of, reactants and products can be changed by adding a catalyst,
  • D The concentrations of reactants and products are not affected by a change in temperature

The correct answer is A. Forward and backward reactions occur at the same rate

Equilibrium is a state of a system where there is no observable change in the properties of the system with respect to time

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