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The position of some metals in the elect...

The position of some metals in the electrochemical series in dectreasing electropositeve character is given as ` Mg gt Al gt Zn gt Cu gt Ag`. What will happen if a copper spoon is used to stir a solution of aluminimum nitrate ?

A

The spoon will get coated with aluminium

B

An alloy of aluminium and copper nitrate

C

The solution becomes blue

D

There is no reaction

Text Solution

Verified by Experts

The correct Answer is:
D
Metals placed below in electrochemical series, can not displace to above placed from its salt in solution.
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ALLEN-ELECTROCHEMISTRY-Part (II) EXERCISE-01
  1. The reduction potential of a hydrogen electrode at pH 10 at 298K is : ...

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  2. The emf of the cell, Ni|Ni^(2+)(1.0M)||Ag^(+)(1.0M)|Ag [E^(@) for Ni^(...

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  3. The position of some metals in the electrochemical series in dectreasi...

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  4. E^(@)(Ni^(2+)//Ni) =- 0.25 volt, E^(@)(Au^(3+)//Au) = 1.50 volt. The e...

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  5. When the electric current is passed through a cell having an electroly...

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  6. The oxidation ptentials of Zn, Cu, Ag, H2 and Ni are 0.76, - 34, - 0.8...

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  7. Which one of the following will increase the voltage of the cell ? (T...

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  8. A chemist wants to produce CI(2)(g) from molten NaCI. How many grams c...

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  9. Cosoder the reactopm: (T = 298 K) Cl2 (g) + 2 BR^(-) (aq) rarr 2 Cl^...

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  10. Three faradays of electricity qas passed through an aqueous solution o...

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  11. The standard emf for the cell cell reaction Zn + Cu^(2+) rarr Zn^(2+)...

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  12. Three moles of electrons are passed through three solutions in success...

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  13. The emf of the cell involving the following reaction, 2Ag^(+) +H(2) ra...

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  14. For the electrochemicl cell, M|M^(+)||X^(-)|X E((M^(+)//M))^(@) = 0.44...

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  15. For the net cell reaction of the cell Zn(s) |Xn^(2+) ||Cd^(2+) |Cd(s) ...

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  16. How many faraday are required to reduce one mol of MnO(4)^(-) to Mn^(2...

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  17. Cu^(+) + e rarr Cu, E^(@) = X(1) volt, Cu^(2+) + 2e rarr Cu, E^(@) =...

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  18. Zn|Zn^(2+)(c(1)) || Zn^(2+)(c(2))|Zn. For this cell DeltaG is negative...

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  19. Pt(H(2))(p(1))|H^(o+)(1M)|(H(2))(p(2)),Pt cell reaction will be exergo...

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  20. Pt |{:((H(2))),(1atm):}:| pH = 2:|:|:pH =3 |:{:((H(2))Pt),(1atm):}:|. ...

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