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.
Sanka said:
9 years ago
There are two elements Na and Fe. Because both element is high level of metal activity series. Na is more react than Fe. But the answer is Fe. Because Na reacts with water. So it's not useful for recover than Fe.
Aleena said:
3 years ago
The electrochemical series shows that Cu is having high reduction potential than Fe. So that there occurs a displacement reaction when Fe is exposed to a solution containing Cu.
This will make Fe to replace Cu.
This will make Fe to replace Cu.
(2)
Akashya Kumar Sahu said:
9 years ago
Iron(Fe) is the right answer as Fe is more reactive than Cu.When Fe reacts with CuSo4(cupper sulphate) solution ,it gives ferrous sulphate (FeSo4) and Cu will be deposited.
CuSo4 + Fe-------> FeSo4 + Cu.
CuSo4 + Fe-------> FeSo4 + Cu.
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".
Nasir iqbal said:
1 decade ago
@Dolly,
Sodium is not used for recovering of cu because cu present in aqueous solution, if sodium is as cathode then it react with water to form sodium hydroxide, hydrogen instead to act as cathode.
Sodium is not used for recovering of cu because cu present in aqueous solution, if sodium is as cathode then it react with water to form sodium hydroxide, hydrogen instead to act as cathode.
Hridan said:
1 decade ago
Why Fe has more reduction power then Cu ?
Fe _ [Ar]18 3d6 4s2 & Cu_ [Ar]18 3d10 4s1.
So the reduction power of Fe is more then cu, as reduction power is nothing but ability to gain electron.
Fe _ [Ar]18 3d6 4s2 & Cu_ [Ar]18 3d10 4s1.
So the reduction power of Fe is more then cu, as reduction power is nothing but ability to gain electron.
Harshi said:
8 years ago
Fe is more reactive than cu thats why cu is displace from copper sulpate solution and thus formation of ferrous sulphate solution is made containing brown colour of doposit layer.
Jhansi said:
10 years ago
cuso4+fe = cu+feso4.
Ferrous sulphate formula feso4.
Sodium sulphate formula na2so4.
Silver sulphate formula ag2so4.
Mercury (hg) is not metal is acid.
So answer is fe.
Ferrous sulphate formula feso4.
Sodium sulphate formula na2so4.
Silver sulphate formula ag2so4.
Mercury (hg) is not metal is acid.
So answer is fe.
Ronald said:
1 decade ago
I Think Fe (Ferrum) will work best because it is not very reactive and yet it can displace copper from its sulphate. Sodium (NA or Natrium) can as well be used.
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.
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