2A + B --> product If the reactant 'B ' is in excess, the order of reaction with respect to ' A in given rate law Rate = k[A]2 [ B ] is:
Correct answer: A. 2nd order reaction
- A. 2nd order reaction
- B. Pseudo 1 order reaction
- C. 1st order reaction
- D. 3rd order reaction
Explanation
Experimental rate equation is called rate law. According to rate law equation, order is 2nd with respect to "A" while order is zero with respect to "B". Order of reaction is zero with respect to excess reactant. So, overall order of reaction is 2nd.
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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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