8. The standard electrode reduction potentials () of , , , and are -1.66 V, 0.80 V, -2.93 V, and -0.74 V respectively. The correct decreasing order of their reducing power is:

Question

8. The standard electrode reduction potentials ($E^\circ$) 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 their reducing power is:

Prashant Kotian · Accepted Answer

Correct answer: B. Reducing power increases as standard reduction potential becomes more negative. The order of is (-2.93 V) < (-1.66 V) < (-0.74 V) < (0.80 V). Therefore, decreasing reducing power is .

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