ElectrochemistryHard
Question
Which of the following facts is not true ?
Options
A.If Eo (Mn+ / M) is negative, H+ will be reduced to H2 by the metal M
B.If Eo (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.
Solution
Active metal has lower EoRed than EoRed of hydrogen so can not be reduced by hydrogen.
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