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Question
Assertion: The overall rate of a complex reaction is governed by the rate of the slowest elementary step.
Reason: All the elementary steps have to wait for the occurrence of the slowest step and the rate of overall reaction cannot exceed the rate of the slowest step.
Options
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.
If Assertion is CORRECT but Reason is INCORRECT.
If Assertion is INCORRECT but Reason is CORRECT.
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Solution
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
Explanation:
In a complex reaction, the overall rate depends on the slowest elementary step, called the rate-determining step. Since faster steps must wait for the slowest step to occur, the overall reaction cannot proceed faster than this step. Hence, the reason correctly explains the assertion.
