+91-8076753736 [email protected]

-->

Electrochemistry

Question

Wired Faculty App

The half reactions are:
(i) Fe³⁺ + e^– → Fe²⁺, E° = 0.76 V
(ii) Ag⁺+ e^– → Ag,E° = 0.80 V
Calculate K_c for the following reaction at 25° C:
${Ag}^{+} + {Fe}^{3 +} ⇋ {Fe}^{3 +} + Ag (F = 96500 C {mol}^{- 1})$

Solution

E °_{cell} = E °_{{Ag}^{+} / Ag} - E °_{{Fe}^{3 +} / {Fe}^{2 +}} = + 0.80 V - 0.76 V = + 0.04 V + nE ° F = 2.303 RT \log k \log K = \frac{0.04}{0.0591} 0.6779 K = 4.763 .

Some More Questions From Electrochemistry Chapter

If the current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons flow through the wire?

Suggest a list of metals that are extracted electrolytically.

Consider the reaction: Cr₂O₇^2– + 14H⁺ + 6e- → 2Cr³⁺ + 8H₂O
What is the quantity of electricity in coulombs needed to reduce 1 mol of Cr₂O₇^2-?

Write the chemistry of recharging the lead storage battery, highlighting all the materials that are involved during recharging.

Suggest two materials other than hydrogen that can be used as fuels in fuel cells.

Name the electrolyte used in fuel cell?

Can we use copper vessel to store AgNO₃solution ?

Suggest a metal that can be used for cathodic protection of iron against rusting.

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation