Purchase Solution

Galvanic Cells and Faraday's Laws

Not what you're looking for?

Ask Custom Question

1. Diagram the following galvanic cell (or just tell what it would look like), indicating the direction of flow of electrons in the external circuit and the motion of ions in the salt bridge. Ni(s)lNi2+(aq)llHCl(aq)lH2(g)lPt(s). Also write a balanced equation for the overall reaction in this cell.

2. In the Hall-Heroult for the electrolytic production of aluminum, Al3+ ions from Al2O3 dissolved in molten cryolite (Na3AlF6) are reduced to Al(l) while carbon is oxidized to CO2 by reaction with oxide ions.
(a)Write balanced equations for the half reactions at the anode and at the cathode and for the overall cell reaction.
(b)If a current of 50,000 A is passed through the cell for a period of 24 hours, what mass of aluminum will be recoverd?

Purchase this Solution

Solution Summary

Solution includes complete diagram for (1) and chemical equations for (1) and (2).

Solution Preview

1) Overall Reaction: Ni (s) + 2H+(aq) Ni2+(aq) + H2 (g)

2) a) cathode reaction: Al3+ + 3e- ---> Al(l)

anode ...

Purchase this Solution


Free BrainMass Quizzes
Match Elements with their Symbols

Elements are provided: choose the matching one- or two-letter symbol for each element.

General Chemistry - Classification of Matter

This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.

Thermochemistry

The quiz helps in revising basic concepts about thermochemistry.

Organic Chemistry Naming: Alkanes

This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.