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5. Thermodynamics and thermochemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry5. Thermodynamics and thermochemistry1 Mark
MCQ
At $67\,^oC$ and $1\ bar$ pressure, dinitrogen tetra oxide is $50\%$ dissociated into nitrogen dioxide. $\Delta {G^o}$ for the process

$2N{O_2}\left( g \right) \rightleftharpoons {N_2}{O_4}\left( g \right)$ is

$\left( {R = \frac{{25}}{3}J/K.mol,\ln 2 = 0.7,\ln 3 = 1.1} \right)$

  • A
    $ - 850\ J\,mol^{-1}$
  • ✓
    $ + 850\ J\,mol^{-1}$
  • C
    $ - 850\ KJ\,mol^{-1}$
  • D
    $ + 850\ KJ\,mol^{-1}$
✓

Answer

Correct option: B.
$ + 850\ J\,mol^{-1}$
b

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