Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

How to make simple equations for anode and cathode in standard electrode potential? How to understand their sign if the value of reduction and oxidation in questions?
Asked by Poojanisha1988 | 19 Jul, 2023, 09:59: PM
answered-by-expert Expert Answer

Dear Student,

Electrochemical cell representation (IUPAC conventions)

Let us illustrate the convention taking the example of Daniel cell.

(a) Anodic half-cell is written on left and cathodic half-cell on right hand side.

Zn(s) |ZnSO4 (sol)||CuSO4 (sol)|Cu(s)

(b) Two half cells are separated by double vertical lines: Double vertical lines indicate slat bridge or any type of porous partition.

(c) EMF (electromotive force) may be written on the right hand side of the cell.

(d)Single vertical lines indicate the phase separation between electrode and electrolyte solution.

Zn|Zn2+|| Cu2+|Cu

(e) Invert eletrodes are represented in the bracket

Zn|ZnSO4 || H+| H2, Pt

EMF of cell should be positive otherwise it will not be feasible in the given direction.

Zn|ZnSO4||CuSO4|Cu

E = + 1.10 volt (Feasible)

Cu|CuSO4||ZnSO4|Zn

E = – 1.10 volt (Not Feasible)

Answered by | 20 Jul, 2023, 12:33: PM
CBSE 12-science - Chemistry
Asked by anithaanu629940 | 11 May, 2024, 12:31: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by summiafroz31 | 06 Feb, 2024, 08:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by aryamankrsinha2002 | 29 Nov, 2023, 11:39: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by banneramadevi | 26 Jul, 2023, 08:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by jajimuji2306 | 03 Apr, 2022, 01:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Harshfarwaha | 23 Jul, 2020, 03:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by sourabhkumar9923 | 19 May, 2020, 08:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by ssharondaniel | 27 Jul, 2019, 06:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by kripanjalihimansu | 28 Feb, 2019, 06:57: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×