1. OBJECTIVE
In this experiment, you will evaluate the reactivities of several common metals against different acids, bases and other oxidizing agents.


At the end of this experiment, you should be able to:

analyze reduction and oxidation half-reactions;

evaluate the corrosive process;

identify the different reactivities of metals.

2. WHERE TO USE THESE CONCEPTS?
Oxidation-reduction processes are of great importance in everyday life, such as in corrosion, fermentation, respiration and the combustion of gasoline. Understanding the oxidation process of metals is a very important topic, as they have many applications in the manufacture of the most diverse products.

The oxidation and reduction processes must compete with each other, because the electrons released in oxidation are also used for reduction. The reaction sequence of the metal can be determined by referring to the reduction potential, that is, the higher and more positive, the greater the reduction tendency.


3. THE EXPERIMENT
In the experiment, the metals copper, magnesium, zinc and iron will be added to test tubes and mixed with 36% hydrochloric acid and 68% nitric acid. The reactions will be monitored to verify the reactivity of the metals.


4. SECURITY
In this practice, a lab coat, gloves and glasses will be used. These safety items are essential so that there is no direct contact with the reactants and reaction products. All reactions must be carried out in the fume hood.


5. SCENARIO
The experiment will be conducted in the chapel. All items needed to perform the experiment will be in the lower cabinet.