Question
Determine the oxidation number of sulfur in each of the following substances: a. BaSO4 b. H2SO3 c. H2S
Determine the oxidation number of sulfur in each of the following substances:
a. BaSO4
b. H2SO3
c. H2S
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a. In BaSO4, the oxidation number of barium (Ba) is +2 and the oxidation number of oxygen (O) is -2 (assuming that sulfur has a normal oxidation state). Since the overall charge of the compound is 0, the oxidation number of sulfur (S) must be +6.
b. In H2SO3, the oxidation number of hydrogen (H) is +1 and the oxidation number of oxygen (O) is -2. Since the overall charge of the compound is 0, the oxidation number of sulfur (S) must be +4.
c. In H2S, the oxidation number of hydrogen (H) is +1. Since the overall charge of the compound is 0, the oxidation number of sulfur (S) must be -2.
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