What is the oxidation state of sulphur in ?

Answer and explanation

Correct answer: B. +6

  1. Step 1: In sulfuric acid (), each hydrogen atom exhibits an oxidation state of and each oxygen atom has an oxidation state of .
  2. Step 2: The sum of oxidation numbers across the neutral molecule equals zero: .
  3. Step 3: Simplifying the linear equation gives .
Answer
+6.
Why not the others: +8 exceeds the maximum possible valence oxidation state of sulfur ( valence electrons); +4 is the oxidation state of sulfur in sulfurous acid (); +2 is the oxidation state of sulfur in thiosulfate or hyposulfite.

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