The pH of two substances A and B are given below.
A ––––––– 6.5 (Acid) B __________ 8.5 (Base) If A and B are allowed to react with each other in aqueous form, the amount of heat energy released may be

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13.6 k cal/mole

Greater than 13.6 k cal/mole

Less than 13.6 k cal/mole

Cannot be predicted

answer is B.

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Detailed Solution

The amount of heat liberated in neutralization reaction is called heat of neutralization. For strong acid and strong base it is 13.6 k cal/mole but for weak acid and weak base it is less than 13.6 k cal/mole.

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