Two different reactions begin with equal concentrations of their respective reactants, A and C. One reaction has a much faster initial rate than the other. Both reactions proceed until they reach equilibrium. A B fast slow Which statement correctly describes a relationship between the various concentrations of reactants and products after equilibrium has been reached? The relative concentrations of A , B , C, or D cannot be determined. The concentration of C equals the concentration of D. The concentration of B is greater than the concentration of D. The concentration of B is greater than the concentration of A.

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