Which of the following reactions is used to make a fuel cell?
- A$Cd_{(s)} + 2Ni(OH)_{3(s)} \to CdO_{(s)} + 2Ni(OH)_{2(s)} + H_2O_{(l)}$
- B$Pb_{(s)} + PbO_{2(s)} + 2H_2SO_{4(aq)} \to 2PbSO_{4(s)} + 2H_2O_{(l)}$
- C$2H_{2(g)} + O_{2(g)} \to 2H_2O_{(l)}$
- D$2Fe_{(s)} + O_{2(g)} + 4H^{+}_{(aq)} \to 2Fe^{2+}_{(aq)} + 2H_2O_{(l)}$
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Similar Questions
For the electrochemical cell $M \mid M^{2+} \parallel X \mid X^{2-}$,if $E^{\circ}_{(M^{2+} / M)} = 0.46 \ V$ and $E^{\circ}_{(X / X^{2-})} = 0.34 \ V$,which of the following is correct?
Which of the following statements is incorrect during the discharge of a lead storage battery?
Easy
View Solution$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.
Medium
View Solution$A$ lead storage battery is discharged. During the charging of this battery,the reaction that occurs at the anode is:
DifficultTS EAMCET 2015
View SolutionGive the uses of the mercury cell.
Easy
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