Question

Select all of the correct statements about reaction rates from the choices below.

a. The lower the rate of a reaction the longer it takes to reach completion.

b. The fastest step in a reaction is called the rate-determining step.

c. As a reaction progresses its rate goes down.

d. Reaction rate constants are independent of temperature.

e. The slowest step in a reaction is called the rate-determining step.

f. Reaction rate constants decrease with increasing temperature.

g. Catalysts increase reaction rates

Answer 1

The correct answers are A, C, E and G.

Explanation:

Option A : the rate determination reaction is slow process. So if the reaction takes long time for the completion, the rate of reaction is low.

Options B : it ia false statement because rate determination step is slow process.

Option C : correct statement. The rate of reaction is decreases with the time because of the decreasing the reactants concentration which are converted into products.

Option D : it is false statement because the rate constants are increases with increase in temperature.

Option E : Correct statement. Slow step process is called as rate determination step.

Option F : false statement. Rate constants are directly proportional to temperature. Increasing the temperature, the rate constants increases.

Option G : true. Catalysts are increase the rate of a reaction without getting consumed in the reaction.