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12 September, 10:02

What is the oxidation number of sulfur in H2SO3?

a. + 3

b. + 1

c. + 2

d. + 4

+5
Answers (1)
  1. 12 September, 10:20
    0
    We need to keep in mind that the compound is neutral.

    H2SO3

    2 (+1) + S+3 (-2) = 0 (since its neutral)

    2+S-6=0

    S-4=0

    S=4

    Therefore the oxidation number for sulfur is + 4.
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