Question

(i) In which of the following solution iron gets oxidized?

(i)Silver nitrate (iii) Zinc sulphate

(ii) Magnesium sulphate (iv) Copper sulphate

(a)(ii) and (iv) (c) (i) and (iii)

(b) (ii)and (iii) (d)(i)and (iv)​

Answer 1

Answer:

option b is correct

reactivity series:

K>Na >Can> Mg> Al >Zn >Fe >Sn> Hg >Ag> Cu> Au

Explanation:

as Zn and mg are more reactive they oxidize Fe

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Answer 2

The iron will get oxidize in the solution of (ii) Magnesium sulfate and (iii) Zinc sulfate.

• The reaction of iron in the solutions is a redox reaction.
• The iron will oxidize, and the other metals in the respective solutions will reduce.
• These kinds of reactions are also called displacement reactions.
• And the displacement is according to the electrochemical series.
• The metal with a lower reduction potential will displace the other metal from its salt solution.
• Magnesium and Zinc are above iron in the electrochemical series with lower reduction potential.
• Hence, the correct answer is an option (B).