General Knowledge - Chemistry - Discussion
Discussion Forum : Chemistry - Section 1 (Q.No. 4)
4.
The metal used to recover copper from a solution of copper sulphate is
Discussion:
85 comments Page 2 of 9.
NAVNEET SINGH said:
1 decade ago
Because Fe have more reactivity then Cu, accordingly to electrochemical series. and also Fe have more reducing power than Cu. hence iron can be use to recover copper from their solution.
if we see the "electrochemical series" we found that.......
Li > K > Sr > Ca > Na > Mg > Al > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Cu > Ag > Hg > Pt > Au, our ans.
if we see the "electrochemical series" we found that.......
Li > K > Sr > Ca > Na > Mg > Al > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Cu > Ag > Hg > Pt > Au, our ans.
Claire said:
1 decade ago
What is needed is a substance that can displace copper hence any substance more reactive than copper will work i.e an [aq] solution of sodium
Resmy said:
1 decade ago
Thanks for your answer Navneeth.Fe is more reactive than copper so it reduces CuSO4 to copper .
Dolly said:
1 decade ago
Fe and Na both are above Cu in electro chemical series. Then why doesnt Na replace copper from its own solution?
Haseeb Ahmed said:
1 decade ago
Since standard electrode reduction potential of iron is -0.44v and for copper is +0.344v, iron act as an reducing agent i.e. (easily oxidized and produces 2 electrons) while copper act as an oxidizing agent I. E (easily reduced by gaining electrons).
Remember one thing: higher the negative value of standard electrode potential, easily the oxidation take place of that element or vice versa.
Remember one thing: higher the negative value of standard electrode potential, easily the oxidation take place of that element or vice versa.
Jay said:
1 decade ago
Dolly in a mechanism iron easily produce 2e- and copper easily gain 2e-. And sodium produce only one electron so mechanism not set so iron is right answer.
Premkumar said:
1 decade ago
cuso4+Fe=Feso4+cu This is chemical reaction. cu give 2+ electron and so4 accept this electron.
Nitin salvi said:
1 decade ago
Fe is high reactive than cu.
Kareena said:
1 decade ago
According to activity series, iron is more reactive then copper hence iron will displace copper from its aqueous solution.
Preeti said:
1 decade ago
Its because iron displaces copper sulphate as iron is more reactive metal than copper.
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