Define inert electrode and give an example. Also,define an active electrode and give examples.
(N/A) An $inert \ electrode$ is an electrode that does not participate in the chemical reaction of the cell but provides a surface for the transfer of electrons. Example: $Platinum \ (Pt)$ or $Graphite$.
An $active \ electrode$ is an electrode that participates in the chemical reaction by either losing ions to the solution or gaining ions from the solution. Examples: $Zinc \ (Zn)$ electrode,$Copper \ (Cu)$ electrode,or $Silver \ (Ag)$ electrode.
An $active \ electrode$ is an electrode that participates in the chemical reaction by either losing ions to the solution or gaining ions from the solution. Examples: $Zinc \ (Zn)$ electrode,$Copper \ (Cu)$ electrode,or $Silver \ (Ag)$ electrode.
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Which of the following statements is true for an electrolytic cell?
The zinc/silver oxide cell is used in electric watches. The reaction is as follows:
$Zn(s) + Ag_2O(s) + H_2O(l) \rightarrow Zn^{2+}(aq) + 2Ag(s) + 2OH^-(aq)$
Given:
$Zn^{2+} + 2e^- \rightarrow Zn ; E^{\circ} = -0.760 \, V$
$Ag_2O + H_2O + 2e^- \rightarrow 2Ag + 2OH^- ; E^{\circ} = 0.344 \, V$
If $F = 96,500 \, C \, mol^{-1}$,the $\Delta G^{\circ}$ of the cell will be $....$ (in $kJ \, mol^{-1}$)
$Zn(s) + Ag_2O(s) + H_2O(l) \rightarrow Zn^{2+}(aq) + 2Ag(s) + 2OH^-(aq)$
Given:
$Zn^{2+} + 2e^- \rightarrow Zn ; E^{\circ} = -0.760 \, V$
$Ag_2O + H_2O + 2e^- \rightarrow 2Ag + 2OH^- ; E^{\circ} = 0.344 \, V$
If $F = 96,500 \, C \, mol^{-1}$,the $\Delta G^{\circ}$ of the cell will be $....$ (in $kJ \, mol^{-1}$)
Which of the following is $NOT$ a function of a salt bridge?
$A$ fuel cell uses $CH_4$ gas and it forms $CO_3^{2-}$ at the anode. It is used to power a car with $96.5 \ A$ for $10000 \ s$. The volume of $CH_4$ gas required at $1 \ atm$ and $273 \ K$ is $............ \ L$.
Medium
View SolutionWhat acts as a reducing agent when a dry cell is working?
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