General Science • ChemistryHard
What is the oxidation state of sulfur in peroxymonosulfuric acid (Caro's acid, H2SO5)?
A. +4
B. +6✓ Correct Answer
C. +8
D. +2
💡 Solution & Explanation
In peroxymonosulfuric acid, the central sulfur atom is bonded to two hydroxyl groups, one oxo group, and one peroxy linkage where oxygen atoms share a minus one oxidation state. Calculating through standard algebraic rules for hydrogen at plus one and respective oxygens yields a stable sulfur oxidation state of plus six.
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