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Question: Heat of combustion of two isomers A and B are –17 KJ mol<sup>–</sup> and –12KJmol<sup>–1</sup> respe...

Heat of combustion of two isomers A and B are –17 KJ mol– and –12KJmol–1 respectively. From this information it may be concluded that

A

Isomer A is 5KJ mol–1 more stable

B

Isomer B is 5KJ mol–1 less stable energy

C

Isomer B has 5KJ mol–1 more potential energy

D

Isomer A is 5 KJ mol–1 less stable

Answer

Isomer A is 5 KJ mol–1 less stable

Explanation

Solution

If more heat is released on burning an isomeric

compound, It is more unstable.