Problem: For the simple reaction, A ⇌ B, if the forward rate constant k1 is 100 s−1 and the backward rate constant k−1 is 0.01 s−1, what can you say about the relative concentrations of A and B at equilibrium. A. The concentration of B is much greater than that of A.B. The concentration of A is much greater than that of B.C. The concentrations of A and B will be exactly equal.D. It depends on the initial concentration of A.E. It depends on the initial concentrations of A and B.

FREE Expert Solution

We are asked what can you say about the relative concentrations of A and B at equilibrium.


Chemical equilibrium is the state of a reversible reaction where the rate of the forward reaction equals the rate of the reverse reaction.


We are given the following rate constants: 

  • forward rate constant k1 is 100 s−1 
  • backward rate constant k−1 is 0.01 s−1


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Problem Details

For the simple reaction, A ⇌ B, if the forward rate constant k1 is 100 s−1 and the backward rate constant k−1 is 0.01 s−1, what can you say about the relative concentrations of A and B at equilibrium.

A. The concentration of B is much greater than that of A.

B. The concentration of A is much greater than that of B.

C. The concentrations of A and B will be exactly equal.

D. It depends on the initial concentration of A.

E. It depends on the initial concentrations of A and B.

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