Redox Reactions - Result Question 18
####20. The standard electrode potential $(E^{\circ})$ values of $Al^{3+} / Al, Ag^{+} / Ag, K^{+} / K$ and $Cr^{3+} / Cr$ are $-1.66 V$, $0.80 V,-2.93 V$ and $-0.74 V$, respectively. The correct decreasing order of reducing power of the metal is
[NEET Odisha 2019]
(a) $Al>K>Ag>Cr$
(b) $Ag>Cr>Al>K$
(c) $K>Al>Cr>Ag$
(d) $K>Al>Ag>Cr$
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Solution:
- (c) Lesser is the reduction potential greater is the reducing power.
Reducing power : $K>Al>Cr>Ag$
