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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.

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38. The following graph is a plot of the rate of reaction versus concentration of the reactant. What is the order of the reaction?

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39. The following graph is a plot of the rate of reaction versus concentration of the reactant. What is the order of reaction?

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40. For a reaction A → B, the rate of reaction can be denoted by – dB / dt or + dA / dt. State the significance of plus and minus sign in this case?

A reaction A → B, the rate of reaction can be denoted by – dB / dt or + dA / dt.

Here minus sign indicates decrease in the concentration of the reactant while plus sign indicates increase in the concentration of the product.

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