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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.

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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?

For a zero order reaction, it gives a straight line parallel to time ordinate.

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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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