What will be the order of reaction if doubling the concentration of reactant increases the rate by a factor of 4 and tripling the concentration of reactant by a factor of 9?
Correct answer: B. 2
- A. 1
- B. 2
- C. 3
- D. 0
Explanation
The order of a reaction indicates how the rate depends on reactant concentration.If doubling the concentration increases the rate fourfold, and tripling increases it ninefold, the rate depends on the square of the concentration.Hence, the reaction is second order.
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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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