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The exponential form of rate equation for first order rection is [R] = [R] 0 e –kt where, [R] 0 = initial concentration of reactant [R] = concentration of reactant at time t.

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Chemical Kinetics

Short Answer Type

31. The plot of log k versus X is linear with a slope

= \frac{- E_{a}}{2.303 R} .

What is X?

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32. A rate constant of a reaction is 3 x 10^–4 L mol^–1 min^–1. What is the order of the reaction?

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33. Give one example of a reaction where order and molecularity are equal.

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34. Give an example of a pseudo first order reaction.

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35. Identify the order of a reaction, if the rate constant has the units: litre / moles/sec.

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36. Write the differential rate equations for a first order reaction.

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37. Write the first order rate equation in an exponential form.

The exponential form of rate equation for first order rection is [R] = [R]₀e^–kt
where,
[R]₀ = initial concentration of reactant
[R] = concentration of reactant at time t.

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