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JEE Main Chemistry question

ChemistryThermodynamicsJEE Main

In a flask, colourless is in equilibrium with brown coloured . At equilibrium, when the flask is heated to 100°C, the brown colour deepens, and on cooling it becomes less coloured. The change in enthalpy, , for the system (for ) is

Answer: (B)

Solution

Heating shifts the equilibrium further toward (deeper brown colour); by Le Chatelier's principle, heating favours

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Question ID VK-135288