An example of first order reaction?
Correct answer: A. H2O2 → H2O + O2
- A. H2O2 → H2O + O2
- B. 2N2O5 → 4NO2 + O2
- C. 2O3 → 3O2
- D. Both A and B
Explanation
Option Ais correct.The decomposition of hydrogen peroxide, H2O2 → H2O + O2, is an example of a first order reaction. The rate of reaction is proportional to the concentration of the reactant, hydrogen peroxide. This means that if the concentration of hydrogen peroxide is doubled, the rate of reaction will double. The rate law for the decomposition of hydrogen peroxide is given by the following equation: rate = k[H2O2] where k is the rate constant.
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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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