CH-1719
Electrolysis of solutions
Chemistry · Secondary 4 · Medium · Electrolysis of solutions
Aqueous iron(II) sulfate is electrolysed using inert carbon electrodes.
The current is kept constant and the mass of the cathode is recorded at regular time intervals.
Which graph shows how the mass of the cathode changes with time?
The current is kept constant and the mass of the cathode is recorded at regular time intervals.
Which graph shows how the mass of the cathode changes with time?
- A horizontal line showing constant mass with time
- A straight line showing mass of cathode decreasing with time
- A straight line showing mass of cathode increasing with time
- A curve where mass increases at first then decreases later
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