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JEE Main Chemistry question

ChemistryThermodynamicsJEE Main

The standard heat of formation of sodium ions in aqueous solution from the following data will be: Heat of solution from . Heat of formation of from .

Answer: (C)

Solution

Na^+(s)+OH^-(s)+aq \rightarrow Na^+(aq)+OH^-(aq), . Subtracting the given $+aq

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Question ID VK-135163