Question

Question 14 3 pts A few granules of manganese metal are placed in a solution of nickel(II) nitrate. Which of The following does not occur? the manganese is oxidized to manganese ions nickel ion is reduced to nickel metal electrons are transferred from manganese metal to nickel ion the amount of nitrate ion in the solution changes all of these occur

Answer 1

Concept:

In redox reactions reduction and oxidation reaction depends on reduction potential. The species having higher reduction potential get reduced and the species having lower reduction potential get oxidized.

Analysis:

The reduction potential of manganese and nickel is as follows:

  

Mn2+Mn = -1.19 V

Ni2+|Ni = -0.26 V

The reduction potential of nickel is higher than manganese, thus manganese will reduce Ni²⁺ to Ni, and manganese itself oxidized to magnese ions. On oxidation of magnese to magnese ion, electron will produce and these electrons will be transferred to nickel ion.

In this process, the amount of the nitrate ion in the solution will not change.

Final answer:

The following does not occur :

the amount of the nitrate ion in the solution changes.