Question

Which of the following statements regarding enzymes is not true?

• A. Enzymes lower the activation energy of a reaction
• B. Enzymes speed up the attainment of equilibrium of the reaction
• C. Enzyme change the value of equilibrium constant of the reaction
• D. All of the above

Answer 1

Answer: (C)

Enzymes affect the rate of a reaction by lowering the energy needed to initiate the reaction. An enzyme gretly reduces the activation energy $(E_A)$ necessary to initiate a chemical reaction. Enzymes increase the rate of chemical reaction the enzymes accelerate the chemical reactions but do not change the value of equilibrium constant of the reaction.