What is an electrolytic cell? Give its uses.
(N/A) An electrolytic cell is a device in which an external source of voltage is used to drive a non-spontaneous chemical reaction. In this cell,external electrical energy is converted into chemical energy.
Uses: Electrochemical processes are widely used in laboratories and chemical industries. Some key uses are:
$(i)$ Purification of metals: For example,impure copper is refined to high-purity copper. The impure metal acts as the anode,which dissolves upon passing $DC$ current,while $Cu^{2+}$ ions from the solution are reduced and deposited on the cathode.
$(ii)$ Production of metals: Metals such as $Na, Mg,$ and $Al$ are produced by the reduction of their respective metal ions. Sodium and magnesium are obtained by the electrolysis of their molten chlorides,while $Al$ is produced by the electrolysis of aluminium oxide in the presence of cryolite.
Uses: Electrochemical processes are widely used in laboratories and chemical industries. Some key uses are:
$(i)$ Purification of metals: For example,impure copper is refined to high-purity copper. The impure metal acts as the anode,which dissolves upon passing $DC$ current,while $Cu^{2+}$ ions from the solution are reduced and deposited on the cathode.
$(ii)$ Production of metals: Metals such as $Na, Mg,$ and $Al$ are produced by the reduction of their respective metal ions. Sodium and magnesium are obtained by the electrolysis of their molten chlorides,while $Al$ is produced by the electrolysis of aluminium oxide in the presence of cryolite.
Explore More
Similar Questions
The Gibbs energy change (in $J$) for the given reaction at $[Cu^{2+}] = [Sn^{2+}] = 1 \, M$ and $298 \, K$ is:
$Cu_{(s)} + Sn^{2+}_{(aq)} \rightarrow Cu^{2+}_{(aq)} + Sn_{(s)}$
$(E^{\circ}_{Sn^{2+}|Sn} = -0.16 \, V, E^{\circ}_{Cu^{2+}|Cu} = 0.34 \, V, F = 96500 \, C \, mol^{-1})$
$Cu_{(s)} + Sn^{2+}_{(aq)} \rightarrow Cu^{2+}_{(aq)} + Sn_{(s)}$
$(E^{\circ}_{Sn^{2+}|Sn} = -0.16 \, V, E^{\circ}_{Cu^{2+}|Cu} = 0.34 \, V, F = 96500 \, C \, mol^{-1})$
DifficultJEE MAIN 2020
View SolutionWhich of the following are intensive properties?
$(i)$ Molar conductivity
$(ii)$ Electromotive force $(EMF)$
$(iii)$ Resistance
$(iv)$ Heat capacity
$(i)$ Molar conductivity
$(ii)$ Electromotive force $(EMF)$
$(iii)$ Resistance
$(iv)$ Heat capacity
Easy
View SolutionDerive the relation between the dissociation constant $K_a$ and the limiting molar conductivity $\Lambda_m^o$ for a solution of a weak electrolyte.
Medium
View SolutionThe reaction at the cathode in the cells commonly used in clocks involves:
For the reaction $Cu^{2+}_{(aq)} + Fe_{(s)} \rightleftharpoons Fe^{2+}_{(aq)} + Cu_{(s)}$,calculate $\Delta G^o$ in Joules.
Given: $E^o_{Cu^{2+}/Cu} = +0.34 \ V$,$E^o_{Fe^{2+}/Fe} = -0.44 \ V$.
Given: $E^o_{Cu^{2+}/Cu} = +0.34 \ V$,$E^o_{Fe^{2+}/Fe} = -0.44 \ V$.
Difficult
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo