
Concept explainers
Interpretation:
Need to calculate the molar mass of copper from the given quantity of current passing through the cell contains CuSO4 solution.
Concept introduction:
The half-cell reaction was written as below.
From the given time and current the coulombs of charges flowing through the circuit can be calculated by the given formula.
On dividing the number of charges with Faraday constant we can attain the number of moles of electrons involved in the reaction.
From knowing the number of mole of electrons and using the stoichiometry of the reaction, the number of moles of the Cu2+ reduced can be determined. In the present case two moles of electrons was accepted by Cu2+ ion to produce Cu metal.
Then
To find: the molar mass of copper obtained through the electrolysis of aqueous CuSO4solution, for a given period of time upon passing the given quantity of current.

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Chapter 19 Solutions
EBK GENERAL CHEMISTRY: THE ESSENTIAL CO
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