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If a spoon of copper metal is placed in ...

If a spoon of copper metal is placed in a solution of ferrous sulphate-

A

`Cu` will precipitate out

B

iron will precipitate

C

`Cu` and `Fe` will precipitate

D

no reaction will take place

Text Solution

Verified by Experts

The correct Answer is:
D
`E_(Cu^(2+)//Cu)^(0)=0.34,E_(Fe^(2+)//Fe)^(0)=0.044"volt"` So Cu can't displace `Fe^(2+)`
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RESONANCE ENGLISH-ELECTROCHEMISRY-Exercise
  1. E^(@) for F(2)+2e^(-) hArr 2F^(-) is 2.8V,E^(@) for (1)/(2)F+e^(-)=F...

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  2. Consider the cell potentials E(Mg^(2+)|Mg)^(0)=-2.37V and E(Fe^(3+)|Fe...

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  3. If a spoon of copper metal is placed in a solution of ferrous sulphate...

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  4. The position of some metals in the electrochemical series in decreasin...

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  5. Given : E^(c-).(Ag^(o+)|Ag)=0.80V, E^(c-).(Mg^(2+)|Mg)=-2.37V, E^(...

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  6. For Zn^(2+) //Zn, E^(@) =- 0.76, for Ag^(+)//Ag, E^(@) = +0.799V. The...

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  7. Standard electrode potential data is given below : Fe^(3+) (aq) + e ...

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  8. The electrode potential becomes equal to standard electrode potential ...

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  9. Given standard electrode potentials: Fe^(3+) +3e^(-) rarr Fe, E^(@) ...

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

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  11. Any redox reaction would occur spontaneously, if:-

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  12. KCl can be used in salt bridge as electrolyte in which of the followin...

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  13. A reaction : (1)/(2)H(2)(g)+AgCl(s)hArrH^(o+)(aq)+Cl^(Θ)(aq)+Ag(s) ...

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  14. Which of the followig statements about the spontaneous reaction occurr...

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

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

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

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  18. Pt|underset((p(1)))(H(2))|underset((1M))(H^(+))||underset((1M))(H^(+))...

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

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  20. The cell Pt(H(2))(1atm) |H^(+) (pH =?) T^(-) (a=1)AgI(s), Ag has emf, ...

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