NCERT · Class 11 · Chemistry · Redox ReactionsWhat is the oxidation number of Sulfur (S) in Caro's acid ($H2SO5$)?
Step-by-Step Solution
Caro's acid contains one peroxide linkage ($H-O-O-S$). Thus, $2(+1) + x + 3(-2) + 2(-1) = 0 \implies x = +6$. The maximum oxidation state of sulfur cannot exceed its group number (6).
Detailed Options Breakdown
Option : +8
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Redox Reactions.
Option 1: +6 (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: +5
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Redox Reactions.
Option 3: +4
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Redox Reactions.
💡 Study Guide: This question tests core syllabus concepts from Redox Reactions. For formulas, key summaries, and mock exam reference guides, read the full Redox Reactions Revision Notes.