Question

The oxidation number of carbon in H₂C₂O₄ :
(a) + 4 (b) + 3
(c) + 2 (d) – 2

Answer 1

b +3

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Answer 2

(b) + 3

Explanation:

Oxidation number of Carbon in H2C2O4 can be calculated as follows:

2(+1) + 2x -2(4) = 0 where oxidation number of hydrogen is +1 and oxygen is -2.

2 -8 +2x = 0

2x = 6

Therefore x = 6/ 2 = +3

Option B is the answer.