ElectrochemistryHard

Question

Which of the following facts is not true ?

Options

A.If E^o (Mn⁺ / M) is negative, H⁺ will be reduced to H₂ by the metal M

B.If E^o (Mn⁺ / M) is positive, Mn⁺ will be reduced to M by H₂

C.In a cell Mn⁺ / M electrode is attached to hydrogen-half cell. To produce spontaneous cell reaction, metal M will act as negative electrode.

D.Compounds of active metals (Zn, Na, Mg) are reducible by H₂ whereas those of noble metals (Cu, Ag, Au) are not reducible.

Active metal has lower E^o_Red than E^o_Red of hydrogen so can not be reduced by hydrogen.

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