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24 July, 09:22

What mass of ni2 + is produced in solution by passing a current of 67.0 a for a period of 14.0 h, assuming the cell is 90.0 % efficient?

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  1. 24 July, 09:44
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    When we have the current = 67 coulombs/second

    and mol of electrons of Ni2 + = 2

    faraday's constant = 96500

    molar mass of Ni = 58.69 g/mol

    time (sec) = 14 h * 3600

    ∴ the mass of Ni2 + = 50400 sec * 67 coulombs/second * 1 mol of electrons / 96500 coulombs * 1 mol of Ni / 2 mol of electrons * 58.69 g/mol / mol of Ni

    = 1027 g Ni
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