A solution containing one mole per litre of each Cu(NO_(3))_(2),AgNO_(3),Hg_(2)(NO_(3))_(2) and Mg(NO_(3))_(2) is being electrolysed by using inert electrodes. The values of standard electrode potentials in volts (reduction potentials) are Ag//Ag^(+)=+0.80,2Hg//Hg_(2)^(2+)=+0.79,Cu//Cu^(2+)=0.34,Mg//Mg^(2+)=-2.37 with increasing voltage, the sequence of deposition of metals on the cathode will be

A solution containing one mole per litre of each Cu(NO_(3))_(2),AgNO_(

1.	A solution containing one mole per litre of each Cu(NO_(3))_(2),AgNO_(3),Hg_(2)(NO_(3))_(2) and Mg(NO_(3))_(2) is being electrolysed by using inert electrodes. The values of standard electrode potentials in volts (reduction potentials) are Ag//Ag^(+)=+0.80,2Hg//Hg_(2)^(2+)=+0.79,Cu//Cu^(2+)=0.34,Mg//Mg^(2+)=-2.37 with increasing voltage, the sequence of deposition of metals on the cathode will be
Answer» AG,Hg,Cu,Mg Mg,Cu,Hg,Ag Ag,Hg,Cu Cu,Hg,Ag Solution :A cation havig highest REDUCTION potential will be reduced first and so on. However, `Mg^(2+)` in aqueous solution will not be reduced `(E_(Mg^(2+)//Mg)^(o)ltE_(H_(2)O//(1)/(2)H_(2)+OH^(-)))` INSTEAD water would be reduced in preference.