17. Which of the following are true for a dynamic equilibrium? a. The reaction h

Question

17. Which of the following are true for a dynamic equilibrium? a. The reaction has stopped b. The rate constants of the forward and reverse reactions are equal at equilibrium. c The rates of the forward and reverse reactions are equal at equilibrium. d. The forward and reverse reactions have the same order e. The reaction is static. 18. Which of the following apply to the equilibrium constant? a. The value of the equilibrium constant is equal to a constant at a given temperature. b. The equilibrium constant is expressed as reactants in the numerator and products c. d. e. in the denominator. The equilibrium is a static state, and cannot be perturbed. The value of the equilibrium constant is a constant at all temperatures. Pure solids and liquids appear in the equilibrium constant expression only if they are reactants. 19. If an enzyme catalyzed reaction follows Michaelis-Menton kinetics, when will the reaction be first order in substrate? a. Low substrate concentration b. High substrate concentration c. At all substrate concentrations d. Never 20. Which of the following will lead to a change in the overall magnitude of the equilibriur constant? a. A change in reactant concentration b. A change in the product concentration c. A change in pressure d A change in volume e. A change in temperature

Explanation / Answer

17. Rate of forward and backward reactions are equal.

18.The value of an equilibrium constant is equal to a constant at a given temperature.

19. At low substrate concentration.

20. change in temperature. In general rate constant doubles at each 10K rise in temperature.

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