What is the order of the following reaction: 2NO +O2 -> 2NO2
Correct answer: D. 3
- A. 0
- B. 1
- C. 2
- D. 3
Explanation
The order of a chemical reaction is defined as the sum of the powers of the concentration of the reactants in the rate equation of that particular chemical reaction. However in this particular equation rate is absent so we add the moles of the reactants side giving us the order 3.
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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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