When a reaction has reached equilibrium... A. Q = K B. The rate of the forward reaction and the rate of the reverse reaction are equal. C. Both the forward and reverse reactions stop occurring. D. The concentration of products and the concentration of reactants are equal. E. The forward rate constant and the reverse rate constant are equal.

The correct answer is option A.

Explanation:

Equilibrium is a state when rate of forward reaction is equal to the rate of backward reaction. The concentration of reactants and products becomes constant at this state.

The ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric coefficients is termed as Equilibrium constant. It is denoted by .

aA + bB cC

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