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Chemical Kinetics

Short Answer Type

71. How is the value of rate constant (k) depends on concentration of reactants and temperature?

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72. According to Arrhenius hypothesis, rate of reaction increases with increase in temperature. Give reasons.

According to Arrhenius hypothesis, when temperature of the reaction is increased the activation energy of reactant molecules increases, thereby increasing the rate of the reactions.

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73. What is the usefulness of Initial Rate Method?

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74. What will be the shape of the curve if concentration of the reactant is plotted against time for a zero order reaction?

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75. Name one method which can be used to study fast reactions experimentally.

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76. Predict the value of rate constant k if temperature approaches to ∝ Is the value physically reasonable?

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77. Name the reaction order whose rate does not fall with the progress of the reaction?

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78. Give two examples of a reaction whose rate increases with the progress of the reaction.

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79. If Co is the initial concentration of the reactant following first order reaction and C_nis the concentration left after n halves, what is the relationship between Co and C_n?

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80. How much the rate of a reaction change when temperature is raised by 10°?

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