The number of atoms or molecules whose concentration determines the rate of a chemical reaction is called the
Correct answer: B. order of the reaction
- A. molecularity of the reaction
- B. order of the reaction
- C. Specific activity of the reaction
- D. Rate constant of the reaction
Explanation
In a chemical reaction, the order of the reaction refers to the dependence of the reaction rate on the concentration of reactants. It specifies the number of reactant molecules or atoms involved in the rate-determining step of the reaction. The order of a reaction can be determined experimentally by observing how changes in the concentration of reactants affect the reaction rate. It is a key factor in understanding and predicting reaction kinetics.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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