Which reaction will have the greater temperature dependence tor the rate constant - one with a small value of energy of activation (E) or one with a large value of activation energy(E)?

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Solution

The rate of a reaction depends on the temperature at which it is run. As the temperature increases, the molecules move faster and therefore collide more frequently.Thus, the proportion of collisions that can overcome the activation energy for the reaction increases with temperature.
Thus the greater temperature dependence For the rate constant - one with a small value of energy of activation (E).

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k = A e^{- \frac{E_{a}}{R T}}

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10^{\circ} C

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