Question

Define the following terms with example .
a) Oxidation
b) Reduction
c) Corrosion
d) Redox reaction
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Answer 1

Answer:

a) The term oxidation was originally used to describe reactions in which an element combines with oxygen. Example: The reaction between magnesium metal and oxygen to form magnesium oxide involves the oxidation of magnesium. ... And, each O2 molecule gains four

b) Reduction is a chemical reaction that involves the gaining of electrons by one of the atoms involved in the reaction between two chemicals. ... An example of a reduction is when iron reacts with oxygen, forming iron oxides such as those called rust. The iron is oxidized and the oxygen is reduced.

c) Corrosion Definition: Corrosion (from the Latin word corrodes, meaning "to gnaw") is the irreversible damage or destruction of living tissue or material due to a chemical or electrochemical reaction. Example: A prime example of corrosion is rusting of iron or steel.

d) The reactions in which oxidation and reduction are taking place at the same time are called redox reactions. For examples: In the above example, Fe2O3 is reduced to Fe by losing oxygen atoms. Thus, Fe undergoes reduction.

Answer 2

a) Oxidation:

➪ Oxidation is defined as a process in which an electron is removed from a molecule during a chemical reaction.

b) Reduction:

➪ Reduction is the gain of electrons by a substance. It is also the loss of oxygen from a substance.

c) Corrosion:

➪ Corrosion is a natural process, which converts a refined metal to a more chemically stable form, such as its oxide, hydroxide or sulphide. It is the gradual destruction of material by chemical or electrochemical reaction with there environment.

d) Redox reaction:

➪ Any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes.