How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0 amp for 5.50 hours?

Question

How many grams of Ca metal are produced by the electrolysis of molten CaBr2 using a current of 30.0 amp for
5.50 hours?

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Eirian 4 years 2021-09-04T08:49:35+00:00 1 Answers 11 views 0

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  1. diemthu
    0
    2021-09-04T08:50:37+00:00
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    Answer: 123 g

    Explanation: Q =It = nzF. For Ca^2+ z= 2, t = 5.5 x 3600 s and I = 30.0

    And F= 96485 As/mol

    Amount of moles is n = It /zF = 3.078 mol , multiply with atomic mass 40.08 g/mol

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