Consider an electrochemical decomposition apparatus comprised of a strontium chloride cell, a berylium chloride cell, and a barium chloride

Question

Consider an electrochemical decomposition apparatus comprised of a strontium chloride cell, a berylium chloride cell, and a barium chloride cell (you should be able deduce the formulae for these compounds). If sufficient charge is passed through the circuit to produce 20 g of strontium in the molten strontium chloride cell, what quantity of berylium is expected in the berylium chloride cell

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Huyền Thanh 3 years 2021-08-19T10:46:45+00:00 1 Answers 46 views 0

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  1. RobertKer
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    2021-08-19T10:48:06+00:00
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    Answer:

    Explanation:

    Atomic weight of strontium ( Sr ) is 88 .

    Atomic weight of Beryllium ( Be) is 9 .

    Both are bivalent .

    2 x 96500 coulomb is required to decompose 88 g of Sr .

    88 g of Sr requires 2 x 96500 coulomb of charge

    20 g of Sr will require   2 x 96500 x 20 / 88 coulomb of charge

    coulomb of charge required = 43863.63 coulomb .

    9 g of Be requires 2 x 96500 coulomb of charge

    2 x 96500 coulomb of charge gives  9 g of Be

    43863.63 coulomb .of charge gives 9 x 43863.63 / (2 x 96500 ) g of Be

    = 2.04 g.

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