Covalent compounds

1. ELECTROCHEMISTRY

2. What is Electrochemistry
The branch of chemistry that deals with the use of
spontaneous chemical reaction to produce electricity
and the use of electricity to bring about non
spontaneous chemical change.

3. What are Half reactions?
Oxidation occurs together with redox reaction but it is
helpful to consider each process separately by writing
two half reactions.
Mg(s) Mg2+
(aq) + 2e-
Fe3+
(aq) + 3e-
 Fe(s)

4. Class Practice
Write the equation for the half reaction for (a) the
oxidation of iron (II) ions to iron(III) ions in aqueous
solution; (b) the reduction of copper (II) ions in aqueous
solution to copper metal.

5. Balancing redox reactions
The chemical equation of a reduction half reaction is added to that of an
oxidation half reaction to form the chemical equation for the overall redox
reaction.
You can balance a redox reaction in acidic and basic reaction.