The standard electrode potential () values of , , and are , , and , respectively. The correct decreasing order of the reducing power of these metals is:

Question

The standard electrode potential ($E^\circ$) values of $Al^{3+}/Al$, $Ag^+/Ag$, $K^+/K$ and $Cr^{3+}/Cr$ are $-1.66	ext{ V}$, $+0.80	ext{ V}$, $-2.93	ext{ V}$ and $-0.74	ext{ V}$, respectively. The correct decreasing order of the reducing power of these metals is:

Prashant Kotian · Accepted Answer

Correct answer: A. The reducing power of a metal increases as its standard reduction potential () becomes more negative, indicating a stronger tendency to lose electrons (be oxidized). The order of is . Thus, the decreasing order of reducing power is .

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