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28 December, 19:54

How many coulombs of electrical charge are transferred from pb to pbo2?

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  1. 28 December, 23:00
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    Oxidation number of Pb is 0 (neutral atom), oxidation number of Pb in PbO is + 4, so Pb lost 4 electron from Pb⁰ to Pb⁺⁴. Charge of one electron is - 1,6·10⁻¹⁹C. Q = 4· (-1,6·10⁻¹⁹C) = - 6,4·10⁻¹⁹C.
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