Which of the following reaction pathways shows the effect of a catalyst (black)

Question

Which of the following reaction pathways shows the effect of a catalyst (black) on an uncatalyzed reaction (gray)? Which of the following is true for a chemical reaction at equilibrium? only the forward reaction stops only the reverse reaction stops both the forward and reverse reactions stop the rate constants for the forward and reverse reactions are equal the rates of the forward and reverse reactions are equal Identify the equilibrium expression for the following reaction, assuming homogeneity: boy + girl^leftarrow_rightarrow couple k = [boy] [girl]/[couple] k = [boy] + [girl]/[couple] k = [boy] [girl] [couple] k = [couple]/[boy][girl] k = [couple] - [boy] - [girl]

Explanation / Answer

25)

catalyst decreases the activation energy and not the state of reactant and product

It provide alternate path to same product

Answer: b

26)

at equilibrium, rate of forward reaction is equal to backward reaction

Answer: e

27)

Answer: d

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