Answer is option B). The rate constant for the forward and revrse reactions are

Question

Answer is option B). The rate constant for the forward and revrse reactions are identical at equilibrium.

At dynamic equilibrium, the reaction rate of the forward reaction is equal to the reaction rate of the backward reaction.

A reaction rate determines how fast a reaction proceeds, and is mathematically defined as the change in concentration of a species over the change in time. For more information, please read Measuring Reaction Rates. An example of a fast reaction would be fire burning (combustion of oxygen) and an example of a slow reaction is iron rusting (oxidation of a metal). Reactions do not only proceed forward; reactions often occur in a mixture of forward and reverse, the more prevalent being the observed course of the reaction.

Reactions should not be conceptualized as one substance completely changing into another; rather, they should be visualized as having two components acting in opposite directions. In this scenario, there is a point where the two components are acting at equal rates; this is referred to as equilibrium. At equilibrium, the reaction rates of the forward and reverse reactions are equal. There are two different types of equilibrium: dynamic equilibrium and static equilibrium.  

Explanation / Answer

The equilibrium constant for the following reaction is given. Assuming that the forward and reverse reactions can be written as elementary steps, which statement below is true for this reaction at equilibrium? A B + C Ke = 150 (A) The rate constant for the forward reaction is 150 times greater than that for the reverse reaction. (B) The rate constants for the forward and reverse reactions are identical at (C) The rate constant for the forward reaction is smaller than that for the reverse (D) The rate constant for the reverse reaction is 150 times greater than that for (E) The rate constants for this reaction cannot be determined based on the equilibrium reaction. the forward reaction. equilibrium constant.

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