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MCQEasyJEE Main 2025 · 4 April, Shift 2Internal Energy & Enthalpy

Chemistry Question from JEE Main 2025 · 4 April, Shift 2

Consider the given data:

(a)  HCl(g)+10H2O(l)→HCl.10 H2OΔH=−69.01 kJ/mol−1(a)\; \text{HCl(g)} + 10\text{H}_2\text{O(l)} \rightarrow \text{HCl}.10\text{ H}_2\text{O} \quad \Delta H = -69.01 \, \text{kJ/mol}^{-1} (b)  HCl(g)+40H2O(l)→HCl.40 H2OΔH=−72.79 kJ/mol−1(b)\; \text{HCl(g)} + 40\text{H}_2\text{O(l)} \rightarrow \text{HCl}.40\text{ H}_2\text{O} \quad \Delta H = -72.79 \, \text{kJ/mol}^{-1}

Choose the correct statement:

  • A

    Dissolution of gas in water is an endothermic process

  • B

    The heat of solution depends on the amount of solvent

  • C

    The heat of dilution for the HCl (HCl.10H2_2O to HCl.40H2_2O) is 3.78 kJ/mol3.78 \, \text{kJ/mol}

  • D

    The heat of formation of HCl solution is represented by both (a) and (b)

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