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 3 of 9.
Lenhkp said:
1 decade ago
Its a simple case of displacement reaction where, Fe being more reactive in the activity series of metal, replaces Cu from the CuSO4 solution to liberate free Cu.
Fe (more reactive) +CuSO4-->FeSO4 + Cu (less reactive).
Fe (more reactive) +CuSO4-->FeSO4 + Cu (less reactive).
Eric said:
1 decade ago
Fe is more reactive than Cu, and so will displace copper in solution.
Srinivas said:
1 decade ago
Iron oxidation state is two so iron accept sulphate ion according to mechanism.
Shashank thorat said:
1 decade ago
Fe has great affinity to the sulphate ion that shows Fe replaces the copper ion the formation of compound FeSo4 or cu can be separated.
Thanish Hijragama said:
1 decade ago
Oxidation state of mercury can be +2, why can't be Hg then?
Akhabue Emmanuel Richards said:
1 decade ago
It has to do with the reactivity of Fe, it displaces Cu from d compound CuSO4, unlike Na, which is less reactive. And reactivity is a function of what I will term "electrochemical positioning".
Mahaveer said:
1 decade ago
Because iron is more reactive than copper. So, it is used to displace copper.
J rey said:
1 decade ago
Because iron is more reactive than copper and has an oxidation number of 2, unlike we can say mercury but it is an liquid metal at room temperature, so there is a reaction mechanism here. And Electrochemistry is applied or ionic equilibria is also.
WarrenTheBoss said:
1 decade ago
The reaction series is as follows:
K Na Ca Mg Al Zn Fe Pb Cu Hg Ag Au
Since only Fe comes b4 copper, Fe can displace copper from the solution.
K Na Ca Mg Al Zn Fe Pb Cu Hg Ag Au
Since only Fe comes b4 copper, Fe can displace copper from the solution.
Aditya said:
1 decade ago
Because iron is higher in the activity series than copper and we know that a metal higher in the activity series displaces the lower ones solution. Hence:-
CuSO4 + Fe--------------------------------->FeSO4 + Cu.
CuSO4 + Fe--------------------------------->FeSO4 + Cu.
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