In which of the following electrochemical cell, overall cell reaction is : ` HgO (s) + H_2 (g) rarr Hg E + H_2O(e )`.A. `Pt | H_2 (g) | H^(+) (aq) |HgO(s) |Hg|Hg€ | Pt`B. `Pt|H_2(g) |NaOH (aq) |HgO (s) |HgE |Pt`C. `Pt | H_2(g) |H^(+) ||NaOH(aq)| HgO(s) |Hg € |Pt`D. ` Pt |H-2 (g) |H^(+) ||HgO(s) |Hg€ |Pt`

In which of the following electrochemical cell, overall cell reaction

1.	In which of the following electrochemical cell, overall cell reaction is : ` HgO (s) + H_2 (g) rarr Hg E + H_2O(e )`.A. `Pt \| H_2 (g) \| H^(+) (aq) \|HgO(s) \|Hg\|Hg€ \| Pt`B. `Pt\|H_2(g) \|NaOH (aq) \|HgO (s) \|HgE \|Pt`C. `Pt \| H_2(g) \|H^(+) \|\|NaOH(aq)\| HgO(s) \|Hg € \|Pt`D. ` Pt \|H-2 (g) \|H^(+) \|\|HgO(s) \|Hg€ \|Pt`
Answer» Correct Answer - B ` Pt \| H_2 (g) \| NaOH (aq) \| HgO (s) \| Hg (l) Pt1` ` LHE` reaction : ` H_2 (g) + 2 OH^(-) H_2O (l) _2e` ` rarr Hg (l) 2OH^(-)` Net cell reaction : ` HgO (s) + H_2 (g) rarr Hg (l) +H_2 O`.

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