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 8 of 9.
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.
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?
Resmy said:
1 decade ago
Thanks for your answer Navneeth.Fe is more reactive than copper so it reduces CuSO4 to copper .
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
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.
Tushar said:
1 decade ago
The chemical reaction of changing iron and copper sulphate to form iron sulphate and copper :
Fe + CuSO4 → FeSO4 + Cu
Fe + CuSO4 → FeSO4 + Cu
Prams said:
1 decade ago
Thank you for your valuable info Jehangir.
Jehangir said:
1 decade ago
Copper and iron both has great affinity for sulphate ions. So if we use iron as electrode. It will give e. And these will be accepted by cup ion and will deposit at cathode. So cu will deposit. And iron will disolve. So contration same.
Seema agrawal said:
1 decade ago
Can't amalgam be formed in case of Hg?
Srishti said:
1 decade ago
Is it electromagnetic table or the electrochemical series?
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