Chemistry - Chemical Kinetics Question with Solution | TestHub
Given below are two statements.
Statement-1: Rate of all chemical reactions both exothermic and endothermic reactions increases or increasing the temperature.
Statement-2: On increasing temperature the rate constant of exothermic reaction decreases whereas endothermic reaction increases .
Options:
Answer:
Solution:
Solution/Explanation/Calculation:
Statement-I: The rate of all chemical reactions, both exothermic and endothermic, increases upon increasing the temperature.
This statement is true. According to the Arrhenius equation, the rate of a chemical reaction increases with an increase in temperature.
As temperature increases, the exponential term increases, leading to an increase in the rate constant , which results in a faster reaction rate. This holds true for both exothermic and endothermic reactions.
Statement-2 is False: As we saw in the Arrhenius equation, the rate constant increases with temperature for both exothermic and endothermic reactions.
Hence, option (2) is correct.