(a)[1]
Fill in the table by working out the missing mass increases.
(b(i))[1]
Describe what the cathode looks like after the current has been passed for $25$ minutes.
(b(ii))[1]
Explain why this happens.
(c)[2]
Predict the increase in mass when a current of $2$ amps is passed for $28$ minutes. Indicate on the grid how your prediction was obtained.
(d)[1]
Suggest a reason why the predicted increase in mass of the cathode is larger than the real increase.
(e(i))[1]
What change occurs to the mass of the anode in this experiment?
(e(ii))[2]
The copper anode starts with a mass of $4.00\text{ g}$.\n\nUse the table to predict the anode’s mass after $2$ amps has been passed through $1\text{ mol dm}^{-3}$ copper(II) sulfate for $15$ minutes.