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Thermodynamics question

2025 · 4 Apr · Shift 2 · Q15
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Thermodynamics question

2025 · 4 Apr · Shift 2 · Q15

JEE MainChemistryThermodynamicsMCQ+4 / −1
Consider the given data : (a) HCl(g)+10H2O(l)→HCl.10H2OΔH=−69.01 kJ mol−1\mathrm{HCl}(\mathrm{g})+10 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{HCl} .10 \mathrm{H}_2 \mathrm{O} \Delta \mathrm{H}=-69.01 \mathrm{~kJ} \mathrm{~mol}^{-1}HCl(g)+10H2​O(l)→HCl.10H2​OΔH=−69.01 kJ mol−1(b) HCl(g)+40H2O(l)→HCl.40H2OΔH=−72.79 kJ mol−1\mathrm{HCl}(\mathrm{g})+40 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{HCl} .40 \mathrm{H}_2 \mathrm{O} \Delta \mathrm{H}=-72.79 \mathrm{~kJ} \mathrm{~mol}^{-1}HCl(g)+40H2​O(l)→HCl.40H2​OΔH=−72.79 kJ mol−1 Choose the correct statement :
  1. A
    The heat of dilution for the HCl(HCl.10H2O\mathrm{HCl}\left(\mathrm{HCl} .10 \mathrm{H}_2 \mathrm{O}\right.HCl(HCl.10H2​O to HCl.40H2O)\left.\mathrm{HCl} .40 \mathrm{H}_2 \mathrm{O}\right)HCl.40H2​O) is 3.78 kJ mol−13.78 \mathrm{~kJ} \mathrm{~mol}^{-1}3.78 kJ mol−1.
  2. B
    Dissolution of gas in water is an endothermic process.
  3. C
    The heat of solution depends on the amount of solvent.
  4. D
    The heat of formation of HCl solution is represented by both (a) and (b).
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