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Electrochemistry Calculation of Oxidation Number

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The average oxidation state of sulfur in S₂O₃²⁻ is:

Verified Answer & Explanation⌄

Correct Answer: D) +2

Concept Explanation

If the average oxidation state of S is x, then 2x + 3(−2) = −2, giving x = +2; the two sulfur atoms are actually non-equivalent.

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