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JEE Main Chemistry question

ChemistryThermodynamicsJEE Main

A gaseous reaction was carried out, first keeping the volume constant and next keeping the pressure constant. In the second experiment, there was an increase in volume. The heats of reaction were different, because

Answer: (B)

Solution

At constant pressure, part of the heat of reaction is used up as work to expand the gas against

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Question ID VK-135225