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Equilibrium — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryEquilibrium1 Mark
MCQ
Which of the following options will be correct for the stage of half completion of the reaction $\text{A}\rightleftharpoons\text{B}.$
  • ✓
    $\Delta\text{G}^\ominus=0$
  • B
    $\Delta\text{G}^\ominus>0$
  • C
    $\Delta\text{G}^\ominus<0$
  • D
    $\Delta\text{G}^\ominus=-\text{RT}$ ln $2$
✓

Answer

Correct option: A.
$\Delta\text{G}^\ominus=0$
$\text{A}\rightleftharpoons\text{B}$
$\Delta\text{G}^\ominus=-\text{RT}$ ln $K$
At the stage of half completion of reaction $[A] = [B],$
Therefore, $K = 1$. Thus, $\Delta\text{G}^\ominus=0$

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