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15-06-2016
Chemistry

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What is the oxidation number of phosphorus (P) in phosphoric acid (H3PO4)?

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Willchemistry Willchemistry

15-06-2016

H₃PO₄ :

H = +1

P = + 5

O = -2

+1 * 3 + 5 + 4 * (-2) = 0

Answer H = +1

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