CH-1756
Half-equations
Chemistry · Secondary 4 · Medium · Half-equations
During electrolysis, a current is passed through aqueous copper(II) sulfate using inert electrodes. 0.64 g of copper is deposited at the cathode.
How many moles of electrons are needed to deposit this mass of copper?
(Relative atomic mass: Cu = 64)
How many moles of electrons are needed to deposit this mass of copper?
(Relative atomic mass: Cu = 64)
- 0.005 mol
- 0.01 mol
- 0.02 mol
- 0.04 mol
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