[PDF] Name_____________________________ Test - Redox

What is the difference between redox and electrochemistry?

Electrochemistry is the study of how chemical reactions produce electrical energy and in turn how electrical energy causes chemical reactions. These chemical reactions involve transfer of electrons. A redox reaction is one in which reduction and oxidation processes occur simultaneously. Redox reactions involve electron gain and electron loss.

What are redox reactions?

Any such reaction involves both a reduction process and a complementary oxidation process, two key concepts involved with electron transfer processes. Redox reactions include all chemical reactions in which atoms have their oxidation state changed; in general, redox reactions involve the transfer of electrons between chemical species.

How do you balance a redox reaction?

There are two ways of balancing the redox reaction. One method is by using the change in oxidation number of oxidizing agent and the reducing agent, and the other method is based on dividing the redox reaction into two half reactions-one of reduction and another of oxidation.

What is the difference between a cathode and anode redox reaction?

Each half-reaction that makes up a redox reaction has a standard electrode potential. This potential equals the voltage produced by an electrochemical cell in which the cathode reaction is the half-reaction considered, whereas the anode is a standard hydrogen electrode.