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  4. Why do most chemical reaction rates increases rapidly as the temperature rises?

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Q. Why do most chemical reaction rates increases rapidly as the temperature rises?

J & K CETJ & K CET 2010Chemical Kinetics

Solution:

With rise in temperature, fraction of molecules possessing kinetic energy greater than the activation energy increases. Only such molecules are able to cause effective collisions and result in the formation of product. Thus, as the fraction of such molecules increases, rate of the reaction increases.