Assertion :For each ten degree rise of temperature the specific rate constant is nearly doubled. Reason: Energy-wise distribution of molecules in a gas is an experimental function of temperature.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Assertion is correct as for every $10^{o} C$ raise in temperature, the specific rate constant, k nearly doubles. (Although it is not correct for all reactions. for some reactions k even gets trippled for $10^{o} C$ raise).
The value of temperature coefficient is the ratio of rate constants at two different temperature (which differ by $10^{o} C$ ) generally lies between 2 and 3]
The statement is clearly true and it explains the assertion, as the rate of collision among the molecules doubles for $10^{o}$ rise in temperature.

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