Question

Which one of the following species will disproportionate in the following reduction potential diagra

• A. (A) Am+3,Am+4
• B. (B) Amo2+,Am+3
• C. (C) AmO2+,Am+4
• D. (D) None of these

Answer 1

Answer: (D)

(D) None of these

Answer 2

Explanation:
The following electrode potential diagram:We have to find the species which undergoes disproportionation.In general, if the value of emf at the right side of species is greater than that of left side, the species will undergo disproportionation, therefore, will undergo disproportionation reactions.EAm+4/Am+3∘=2.62VEAm+2/Am+4∘=0.86VEcell ∘=Ecathode ∘−Eanode ∘=2.62V−0.86V=1.76VSince,E∘ cell is positive Am+4 ,Am3+can be converted to Amo2+ simultaneously.Hence, the correct option is (D).