17. Which of the factors below is not a condition necessary for equilibrium? A.

Question

17.       Which of the factors below is not a condition necessary for equilibrium?

A.        a closed system

B.         a constant temperature

C.        equal forward and reverse reaction rates

D.        equal concentrations of reactants and products

18.       Products are placed in a beaker.  How do the rates of the forward and reverse reactions change as the

            system proceeds to equilibrium?

Forward Rate               Reverse Rate

A.        increases                      increases

B.         increases                      decreases

C.        decreases                     increases

D.        decreases                     decreases

19.       Which of the factors below is not a condition necessary for equilibrium?

A.        constant macroscopic properties

B.         constant concentrations of reactant and product

C.        equal forward and reverse reaction rates

D.        a high activation energy

Explanation / Answer

17) D

18) B

19 D

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