Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Given below are two statements
Assertion
A
: Protium and deuterium differ in their rates of reactions.
Reason (R): They have different enthalpies of bond dissociation.
The correct answer is
Both and (R) are correct and, (R) is the correct explanation of
is correct but (R) is incorrect
is incorrect but (R) is correct
Reason (R): They have different enthalpies of bond dissociation.
The correct answer is
Both and (R) are correct and, (R) is the correct explanation of
is correct but (R) is incorrect
is incorrect but (R) is correct
B
Both 
and 
are correct but 
is not the correct explanation of 
and are correct but is not the correct explanation of Text Solution
Verified by ExpertsThe correct answer is:
A
bond enthalpy 
bond enthalpy 
.
Due to a difference in their bond dissociation enthalpies, they undergo chemical reactions at different rates. Thus, both, and (R) are true and (R) correctly explains .
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