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Which outcome arises when a reversible reaction reaches equilibrium with comparable forward and reverse rate constants?

A)Reactant and product concentrations are constant
B)Forward reaction stops completely
C)Reverse reaction proceeds indefinitely
D)Temperature rises exponentially

💡 Explanation

When a reversible reaction achieves equilibrium, the forward and reverse reaction rates are equal because, at comparable rate constants, both reactions proceed at measurable speeds. Therefore, reactant and product concentrations remain constant as rates are balanced, rather than stopping, continuing indefinitely, or causing temperature rise which require external factors.

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