Question

Chemical kinetics 2 important questions and answers

Answer 1

1. What is activation energy?

Ans: The minimum amount of energy required to activate the proceed the chemical reaction is called activation energy. Mathematically, it can be related as:

∴ Activation energy (Ea) = Thrasehold energy (ET) – Average energy of reacting molecules (ER)

2. Define half life of the reaction.

Ans: The time required to decrease half of initial concentration of reactant is called half life of the reaction. It is denoted by t1/2. It is related to rate constant as:

It is related to rate constant as:

t1/2 = 0.693/k for first order reaction

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