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Why does the rate of reaction increase w...

Why does the rate of reaction increase with rise in temperature?

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Fraction of molecules possessing energy greater than the threshold energy increases with rise of temperature. Hence the rate of reaction increases with rise in temperature.
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U-LIKE SERIES-CHEMICAL KINETICS -SHORT ANSWER QUESTIONS
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  8. Why does the rate of reaction increase with rise in temperature?

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  18. What will be the initial rate of reaction if its rate constant is 10^(...

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