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Per NCERT eqn 7.45, in 2H₂O₂(aq) → 2H₂O(l) + O₂(g), the oxidation states of O in H₂O₂, O₂, and H₂O are which set?
A0, +1, −1
B−2, 0, −1
C−1, 0, −2
D−1, −2, 0
Answer & Solution
Correct answer: C. −1, 0, −2
NCERT eqn 7.45: H₂O₂ has O at −1 (peroxide); O₂ has O at 0; H₂O has O at −2. Classic disproportionation of O.
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