CBSE Class 12 · 2002 · Foreign · Redox Reactions and ElectrochemistryVery Short Answer

Write the symbolic notation for the standard hydrogen electrode and its potential.

Answer: Pt(s), H₂(g, 1 bar) | H⁺(1 M); E° = 0.00 V (by convention).

Solution

Standard hydrogen electrode:

Pt (s), H_{2} (g, 1 bar) H^{+} (1 M)

Its electrode potential is taken as zero by convention:

E_{H^{+} / H_{2}}^{\circ} = 0.00 V

CBSE Class 12 Board · 2002 · Foreign · Subjective