Name the elements present in anode mud during refining of copper. Why does it contain such elements ?
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In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal.
Answer 2AgNO3 (aq) + Cu (s) → Cu(NO3)2 (aq) + 2Ag (s) Silver Nitrate + Copper → Copper Nitrate + Silver
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If S and T are two sets such that S has 21 elements, T has 32 elements, and S ∩ T has 11 elements, how many elements does S ∪ T have?
It is given that: n(S) = 21, n(T) = 32, n(S ∩ T) = 11 We know that: n (S ∪ T) = n (S) + n (T) – n (S...
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If X and Y are two sets such that X has 40 elements, X ∪Y has 60 elements and X ∩Y has 10 elements, how many elements does Y have?
It is given that: n(X) = 40, n(X ∪ Y) = 60, n(X ∩ Y) = 10 We know that: n(X ∪ Y) = n(X) + n(Y) – n(X ∩ Y) ∴ 60 = 40...
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State the principle of refining of metal by the following methods : (a) Zone refining (b) Electrolytic refining
[Hint :(a) The impurities are more soluble in the melt than in the solid state of the metal. (b) Impure metal is made to act as anode, while the strip of...
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Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present ?
In electrolytic refining of copper, the common elements present in anode mud are selenium, tellurium, silver, gold, platinum, and antimony. These elements are very less reactive and are not affected...
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During extraction of metals, electrolytic refining is used to obtain pure metals.
(i) Anode: Impure silver Cathode: Pure silver (ii) Electrolyte: Silver salt, such as AgNO3, AgCl, etc. (iii) We get pure silver at cathode.
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If S and T are two sets such that S has 21 elements, T has 32 elements, and S ∩ T has 11 elements, how many elements does S ∪ T have
It is given that: n(S) = 21, n(T) = 32, n(S ∩ T) = 11 We know that: n (S ∪ T) = n (S) + n (T) – n (S...
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If X and Y are two sets such that X has 40 elements, X ∪Y has 60 elements and X ∩Y has 10 elements, how many elements does Y have
It is given that: n(X) = 40, n(X ∪ Y) = 60, n(X ∩ Y) = 10 We know that: n(X ∪ Y) = n(X) + n(Y) – n(X ∩ Y) ∴ 60 = 40...
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During the process of electrolytic refining of copper,some metals present as impurity settle as ‘anode mud’.
(c) : In the electrolytic refining of copper the more electropositive impurities like Fe, Zn, Ni, Co, etc. dissolve in the solution and less electropositive impurities such as Ag, Au...
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Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are):
The correct answer is (B, C, D) Impure Cu is used as anode pure Cu deposited at cathode. Electrolyte is acidified solution of CuSO4. impurities settle as anode mud.
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