A calomel electrode is represented as Hg, Hg 2 Cl 2 ,KCl. If in such a half cell

Chemistry · JEE Advanced · NTA Exams — Electrochemistry

1. reduction takes place then Cl^– ion concentration increases
2. oxidation takes place then Cl^– ion concentration decreases
3. the electrode reaction may be represented as
   Hg₂Cl₂(s) + 2e^– 2Hg (l ) + 2Cl^– (aq)
4. the electrode reaction taking place is
   Hg₂Cl₂(s)  \(\mathrm{Hg}_{2}^{2+}\)(aq) + 2Cl^– (aq)

Answer

(A) reduction takes place then Cl – ion concentration increases, (B) oxidation takes place then Cl – ion concentration decreases, (C) the electrode reaction may be represented as Hg 2 Cl 2 (s) + 2e – 2Hg ( l ) + 2Cl – (aq)

Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.

Related practice questions

• On passing electricity through an aqueous solution of copper sulphate using copper electrodes then
• The standard reduction potentials at 298K for the following half reactions are given against each Zn 2+ (aq)…
• By passing 0.1 Faraday of electricity through fused sodium chloride, the amount of chlorine liberated is…
• Equivalent conductances of NaCl, HCl and CH 3 COONa at infinite dilution are 126.45, 426.16 and 91 ohm –1 cm…
• For the following cell, (2017) Zn ( ~s ) | ZnSO _ 4 ( aq ) CuSO _ 4 ( aq ) | Cu ( ~s ) When the concentration…
• Conductance (unit Siemen’s S) is directly proportional to area of the vessel and the concentration of the…
• Standard reduction electrode potentials of three metals A, B and C are respectively – 0.5, – 3.0 V and – 1.2…
• Consider the following cell reaction 2Fe ( s ) + O 2( g ) + 4H + ( aq ) → 2Fe 2 + ( aq ) + 2H 2 O ( l ) ; E°…

More Electrochemistry questions · Browse all practice questions