STANDARDChemistry-Oxidation States
STANDARD Chemistry Oxidation Number Calculation MCQ Question
Type: MCQ-numerical-Medium
Oxidation number of Sulphur in peroxomonosulphuric acid (H₂S₂O₅) is
A
+4
B
+2
C
+6
D
−2
Correct Answer
Option C
Detailed Explanation
Oxidation number of O in peroxo linkage = −1. Oxidation number of other O atoms = −2. +2 + x − 6 − 2 = 0 or x = +6.
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