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JEE Main Chemistry question

ChemistryThermodynamicsJEE Main

What are the signs of the entropy change (), enthalpy change (), and free energy change () in the spontaneous combustion reaction ? **[K CET 2007]**

Answer: (C)

Solution

For , of gas contract to of gas (), so entropy decreases (). The combustion is strongly exothermic () and spontaneous at ordinary temperatures once initiated (), so the signs of are

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Question ID VK-134729