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Chemistry help?

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1) textbooks often describe oxidation as a process in which the oxidation number of a species increases. Demonstrate that this definition is consistent with the definition given for oxidation in the introduction to this experiment.
asked Apr 25, 2015 in CHEMISTRY by heather Apprentice

1 Answer

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Step 1:

Oxidation process:

An oxidation is defined as loss of electrons in the process of a chemical reaction.

If a species gains electrons, it is undergoing a reduction.

Oxidation is process where the oxidation number increases.

Oxidation numbers are assigned to elements as follows :

1. The oxidation number of a element in its free state is always zero.

2. The oxidation number of a monotonic ion is same as the charge of the ion.

3. The sum of all oxidation numbers in a neutral compound is zero.

Step 2:

Consider a oxidation - reduction reaction.

Example: image.

Here Carbon (C) two gain electrons and changes its charge from +4 to +2.

Similarly Hydrogen (H2) losses one electron and changes its charge from 0 to +1.

Hence Hydrogen is oxidized and carbon is reduced.

Solution:

Oxidation is process where the oxidation number increases.

answered Apr 25, 2015 by Lucy Mentor

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