A) \[Ag,Hg,Cu\]
B) \[Cu,Hg,Ag\]
C) \[Ag,Hg,Cu,Mg\]
D) \[Mg,Cu,Hg,Ag\]
Correct Answer: A
Solution :
Greater the value of standard reduction potential, greater will be its tendency to undergo reduction. So, the sequence of deposition of metals on cathode will be Ag, Hg, Cu. here, magnesium will not be deposited because its standard reduction potential is negative. So, it is strong tandency to undergo oxidation. Therefore, on electrolysis of \[\text{Mg(N}{{\text{O}}_{3}}{{\text{)}}_{2}}\] solution,\[{{\text{H}}_{\text{2}}}\] gas will be evolved at cathode.You need to login to perform this action.
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