Question

Zine is coated over iron to prevent rusting of iron because
(a) EⓇZn2+ z = EºFe2+/Fe (B)EºZn2+/Zn < E° Fe2+/Fe
(c) E°Zn2+Zn > Eºre+Fe
(d) None of these​

Answer 1

Answer:

c) electron gain enthalpy of zinc is higher than that of iron

Answer 2

Zinc is coated over iron to prevent rusting of iron because EºZn2+/Zn < E° Fe2+/Fe.

Explanation :

• Out of these two metals the standard reduction potential (Eº) of Zinc is lesser than Iron.
• Hence Zinc is more reactive than Iron and Zinc undergoes corrosion first and protects the Iron from corrosion.
• This process of preventing Iron by coating Zinc on the surface of Iron is called Galvanization.
• Zinc act as anode and Iron act as cathode.

Therefore the Answer B is correct.

To learn more...

1. An alloy of tin and zinc consists of 45% tin and rest of zinc. Find the weight of tin in the alloy if the weight of zinc is 90kg.

https://brainly.in/question/6682767

2. An alloy of iron and Zinc contains 40% of iron and the rest is zinc find the weight of the thing in 3 kg of the alloy.

https://brainly.in/question/13221172