#### Question

What are the oxidation numbers of the underlined elements in each of the following and how do you rationalise your results?

__C__H_{3}__C__H_{2}OH

#### Solution 1

By conventional method O.N of C in CH_3CH_2OH =

or 2x + 6(+1) + 1(-2) = 0 or x = -2

#### Solution 2

__C__H_{3}__C__H_{2}OH

2(x) + 6(+1) + 1(-2) = 0 or 2x + 4 = 0

or x = -2

Hence, the O.N. of C is –2.

Is there an error in this question or solution?

Solution What Are the Oxidation Numbers of the Underlined Elements in Each of the Following and How Do You Rationalise Your Results?Ch3ch2oh Concept: Oxidation Number - Introduction.