Verified Solution • 2025–26 Session moderate

QNEET-2021-Ch-590: NEET 2021 Chemistry - Class 12 NEET-2021-Ch-590 Solution: For a reaction \(A B\) enthalpy of reaction is \(-4.2\ {kJ…

For a reaction A→BA \rightarrow B enthalpy of reaction is −4.2 kJ mol−1-4.2\ \text{kJ mol}^{-1} and enthalpy of activation is 9.6 kJ mol−19.6\ \text{kJ mol}^{-1}. The correct potential energy profile for the reaction is shown in option.

Multiple Choice Options

  • A https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/148e142a336ea3bad98448d84e124b7d9598e872aabed8878fa26ecfae6eda31.webp
  • B https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/1133db7535e7d844fb0ac3fcdf6a2b9c420936739fb5eb3e9ecabb1ddb19611a.webp
  • C https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/0330c179147e215c2662f57542c1e389a7b95ecdee8cde966b93a93c0de642e2.webp
  • D https://pub-09328fb7cd7b4b94aaf562e6bb66ceaf.r2.dev/photos/be4b3dada02a357a05a5e7ee3cfaec177caaea788dfed6992173c131c5e34025.webp

Step-by-Step Verified Solution

The enthalpy of reaction is negative, � 4.2 kJ mol _1 . The reaction is an exothermic reaction i.e. the energy of product B, is less than the energy of reactant A. So, the potential energy profile for the reaction is

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