Ships, being exposed to saltwater and atmospheric conditions, are highly susceptible to rust and…
Chemistry20253 marksCase based
Ships, being exposed to saltwater and atmospheric conditions, are highly susceptible to rust and corrosion.
This is one method used to prevent corrosion.
Figure 1
(a)[1.0]
Give name of the method employed?
(b)[1.0]
Name the cathode and anode in this process?
(c)[1.0]
How is cathode protected?
Answer
Answer (a)
Official answer key
Electrical protection.
Answer (b)
Official answer key
Anode - Magnesium and Cathode - Iron
Answer (c)
Official answer key
Anode oxidises and electrons are transferred. $\mathrm{NH^+}$ ions around the iron object and protects it from rusting.
