Essential Chemistry for IGCSE - Chemical Reactions (Section 2 - No. 38)
Which of the following is the correct definition of an equilibrium?
When the forward reaction ceases to take place.
The concentration of reactants is the same as the concentration of products.
The rate of the forward reaction is equal to the rate of the reverse reaction.
The reaction is complete, with all reactants converted to products.
Explanation
Equilibrium is achieved when the forward and reverse reaction rates are the same, even though both reactions are still going.
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