Question

The rate of a chemical reaction can be expressed in Molarity per seconds?

(a) True

(b) False

I got this question in an international level competition.

The above asked question is from Concentration Gradients and Reaction Rates in Solid Catalysts in chapter Heterogenous Reactions of Bioprocess Engineering

Answer 1

The correct option is (a) True

Explanation: There are many factors that can either slow or speed up the rate of a chemical reaction such as temperature, pressure, concentration, and catalysts. The Rate of a Chemical Reaction is always positive. It can be confusing since the Rate of Disappearance is negative, however when you think about it, a rate should never be negative since the rate is describing how fast the concentration changes with time. The units for the rate is Molarity per Seconds (M/s).