When the concentration of a reactant in the reaction is increased by 8 times, the rate is increased only by 2 times.The order of reaction is:
Correct answer: B. 1/3
- A. 1
- B. 1/3
- C. 1/2
- D. 2
Explanation
The order of reaction can be determined by examining how the rate changes with varying concentrations of the reactant. In this case, the rate increases by 2 times when the concentration is increased by 8 times, which suggests a fractional order. We use the rate equation Rate = [A]n to find that 2 = 8n. Solving for n gives n = 1/3, indicating a fractional order of reaction. Other options like 1, 1/2, and 2 do not satisfy the condition given in the problem.
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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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