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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry5. Thermodynamics and thermochemistry1 Mark
MCQ
The maximum work done in expnading $16\,g\, O_2$ isothermally at $300\, K$ and occupying a volume $5\, dm^3$ until the volume becomes $25\, dm^3$ is
  • ✓
    $-2.01\times10^3\, J$
  • B
    $2.01\times10^{-3}\, J$
  • C
    $+2.81\times10^3\, J$
  • D
    $+2.01\times10^{-6}\, J$
✓

Answer

Correct option: A.
$-2.01\times10^3\, J$
a
$K=\frac{10^{-14}}{55.5}$

$\Delta G^{o}=-R T \ln K=-8.314 \times 298 \,\ell n\, \frac{10^{-14}}{55.5}$

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