MCQ
Given
$E^o_{Cl_2/Cl^-} = 1.36\,V,$ $E^o_{Cr^{3+}/Cr}= -0.74\,V,$
$E^o_{Cr_2/O_7^{2-}/Cr^{3+}}=1.33\,V,$ $E^o_{MnO^-_4/Mn^{2+}} = 1.51\,V$
Among the following, the strongest reducing agent is
- ✓$Cr$
- B$Mn^{2+}$
- C$Cr^{+3}$
- D$Cl^-$
✓
Answer
Correct option: A.
$Cr$
a
Lower the reduction potential, greater is the tendency of the element to get oxidized, hence, greater is the reducing ability. Since, chromium system has lowest reduction potential; therefore, it is the strongest reducing agent.
Lower the reduction potential, greater is the tendency of the element to get oxidized, hence, greater is the reducing ability. Since, chromium system has lowest reduction potential; therefore, it is the strongest reducing agent.
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