A voltaic cell is constructed using the Ag / Ag+ half cell and Pb / Pb2+. Use section 24 of the data booklet to state the following. Include state symbols in your equations.
Half equation for the Ag / Ag+ half cell ……………………………………………………………………………………..
[1]
Half equation for the Pb / Pb2+ half cell ……………………………………………………………………………………..
[1]
Overall equation for the voltaic cell ……………………………………………………………………………………..
The inert electrodes for the electrolysis of copper sulfate are replaced by copper electrodes. State the half equations that occur at the anode and cathode that occur with copper electrodes.
During the electrolysis of silver nitrate a current of 0.10 amps is run for ten minutes. Use section 2 and 6 of the data booklet to determine the following.
i)
The number of coulombs.
[1]
ii)
The number of Faradays.
[1]
iii)
The half equation for the formation of silver metal from silver ions.
[1]
iv)
The amount of silver, in moles.
[1]
v)
The mass of silver, in grams, deposited after ten minutes.
A solution of copper sulfate, CuSO4 (aq), is electrolysed for 20 mins at a current of 1.50 A. Use sections 2 and 6 of the data booklet to determine the following.
i)
The number of coulombs.
[1]
ii)
The number of Faradays.
[1]
iii)
The half equation for the formation of copper metal from copper ions.
[1]
iv)
The amount of copper, in moles.
[1]
v)
The mass of copper, in grams, deposited after ten minutes.
A student sets up apparatus to electroplate a metal spoon with copper. The student chose to use copper as the anode and the spoon as the cathode. Is the student correct to do so?
