The 2nd order reaction becomes 1st order when:
Correct answer: B. One of the reactants is in large excess
- A. One of the reactants is limiting
- B. One of the reactants is in large excess
- C. None of the reactants is in large excess
- D. Both reactants in large excess
Explanation
The substance taken in small amount controls the rate and the order is noted with respect to that substance. If the cone. Of any reactant is taken in excess it will not involve in rate determination step.
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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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