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When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox)...

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Chemistry

When electricity (the flow of electrons) is passed through asolution, it causes an oxidation-reduction (redox) reaction tooccur. If the solution contains a metal cation such as Ag+, theflow of electrons will reduce the silver ion, causing solid silverto plate onto the electrode. The amount of metal plated depends onthe number of electrons passed.

The total charge of a mole of electrons is 96,485 coulombs (C)and

1ampere(A)=1coulomb/second(C/s)

A) What mass of Cu(s) is electroplated by running 27.0 A ofcurrent through a Cu2+(aq) solution for 4.00 h?

B) How many minutes will it take to electroplate 34.1 g of goldby running 5.00 A of current through a solution of Au+(aq)?

Answer & Explanation Solved by verified expert
3.6 Ratings (422 Votes)
A Electrolysis equation is Cu2 2e Cu 1 mol of Cu requires 2 mol of electron 1 mol of electron 96485 C So1 mol of Cu requires 192970 C let us calculate    See Answer
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