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STD 11 - 5. Thermodynamics and thermochemistry — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 5. Thermodynamics and thermochemistry4 Marks
MCQ
For the reaction ${N_2} + 3{H_2}$ $\rightleftharpoons$ $2N{H_3};\,\Delta H = ?$
  • A
    $\Delta E - RT$
  • ✓
    $\Delta E - 2RT$
  • C
    $\Delta E + RT$
  • D
    $\Delta E + 2RT$
✓

Answer

Correct option: B.
$\Delta E - 2RT$
(b)$\Delta H = \Delta E + \Delta nRT$
Since $\Delta n = - 2$
Than $\Delta H = \Delta E - 2RT$.

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