# Chemical Kinetics

Subject: Chemistry    Exam: AIPMT / NEET-UG

Chapter Rating: Do or Die (Most Important)

Topic Weightage: 0.04

## Important Concepts in Chemical Kinetics

Find notes, videos, important points and questions to practice on each of these concepts.

Most Important Concepts (Do or Die)
• Order of Reaction

Important Concepts (Should Do)
• Rate of Reaction

• Average Rate and Instantaneous Rate

• Rate Law

• Zero Order Reactions

• First Order Reactions

• Second Order Reactions

• Molecularity

• Half-life of Reactions

• Arrhenius Equation

• Activation Energy

Not So Important Concepts (Do if you have time)
• Initial Rate Method

• Integration Method

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## Important Points

Order of reaction: sum of the exponents of the concentration of reactants in the rate law is termed as order of reaction. It can be zero or in fraction.
When the concentration of reactants is unity, the rate of reaction is called rate constant.
The time taken for a reaction when half of the starting material has reacted is called half-life of reaction, for first order t1/2 = 0.693/K where K is rate constant.
ArrhenArrhenius equation of reaction rate: It gives relation between rate of reaction and temperature K=Ae-E/RT ,K= rate constant , A= frequency factor ,E= energy of activation,R= gas constant, T= temperature in Kelvin ius equation of reaction rate: It gives relation between rate of reaction and temperature K=Ae-E/RT

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