Chemistry - Redox Reactions - Oxidation states/numbers - Oxidation State Drill

12 oxidation state problems. Q1: 'S in SO₂: S + 2(-2) = 0, S = ___' (+4). Q2: 'N in NO₃⁻: N + 3(-2) = -1, N = ___' (+5). Q3: 'P in PO₄³⁻: P = ___' (+5). Q4: 'Cl in ClO₃⁻' (+5). Q5: 'Fe in Fe₂(SO₄)₃: Each SO₄ is -2, so Fe = ___' (+3). Q6: 'C in CH₄' (-4). Q7: 'Mn in MnO₂' (+4). Q8: 'Cu in CuO' (+2).

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Chemistry - Redox Reactions - Oxidation states/numbers - Oxidation State Drill
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Chemistry - Redox Reactions - Oxidation states/numbers - Oxidation State Drill

vivmagarwal
vivmagarwalJan 29, 2026

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12 oxidation state problems. Q1: 'S in SO₂: S + 2(-2) = 0, S = ___' (+4). Q2: 'N in NO₃⁻: N + 3(-2) = -1, N = ___' (+5). Q3: 'P in PO₄³⁻: P = ___' (+5). Q4: 'Cl in ClO₃⁻' (+5). Q5: 'Fe in Fe₂(SO₄)₃: Each SO₄ is -2, so Fe = ___' (+3). Q6: 'C in CH₄' (-4). Q7: 'Mn in MnO₂' (+4). Q8: 'Cu in CuO' (+2).

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ChemistryRedox ReactionsClass 11, AS Level, Class 11, DP Grade 11, Grade 11

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