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JEE Main Chemistry question

ChemistryThermodynamicsJEE Main

The heat of formation is the change in enthalpy accompanying the formation of a substance from its elements at 298 K and 1 atm pressure. Since the enthalpies of elements in their most stable state are taken to be zero, the heat of formation of compounds is

Answer: (C)

Solution

With elements in their standard states taken as the zero reference, the enthalpy of any compound (measured relative to this

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Question ID VK-135281