Assertion :The rate of reaction increases generally by 2 to 3 times for every 10∘C rise in temperature. Reason: An increase in temperature increases the coliision frequency.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The rate of reaction is dependent on temperature. This is expressed in terms of temperature coefficient which is a ratio of two rate constants differing by a temperature of 100.
The rate of reaction increases generally by 2 to 3 times for every 100 C rise in temperature as with increase of temperature by 10 degrees, the fraction of molecules having effective collisions becomes 2 or 3 times.