WAEC Chemistry 2015 Theory — Question 10
Question 10 of 49 from the West African Examinations Council (WAEC) Chemistry 2015 Theory paper, with the correct answer and a full explanation.
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1(i). Determine the oxidation number of sulphur in H₂SO₄.
Model answer
In H₂SO₄: (+1×2) + S + (−2×4) = 0 → 2 + S − 8 = 0 → S = +6.
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