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A cell is set up between ‘Zn’ and ‘Cu’ e...

A cell is set up between ‘Zn’ and ‘Cu’ electrode. If the two half cells work under standard condition, calculate the cell potential. Given `E^@(Zn^(2+)//Zn)=-0.76V` and `E^@(Cu^(2+)//Cu)=+0.34V`.

A

Copper

B

Zinc

C

Hydrogen

D

`Cu^(2+)`

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The correct Answer is:
D
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The standard cell potential for the cell is , Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu [E^@ for Zn^(2+)//Zn=-0.76V, E^@ for Cu^(2+)//Cu=+0.34V]

Write the cell reaction and cell potential of the cell Zn//Zn^(2+)(0.01 M)abs"Ag^+(0.1M)//Ag. Given E^0(Zn^(2+)//Zn)=-0.76V E^0(Ag^+//Ag)=+0.80V .

Write the cell reaction and calculate the emf of the Cell Zn|Co^2+(aq)|| Zn^2+(aq)| Co (Given E_(Zn|Zn^2+)^@=+0.76V and E_(Co|Co^2+)^@=+0.28V .

Find the cell potential at 25^@C for the cell- Mg//Mg^(2+)(0.001)//Cu^(2+)(0.0001 M)//Cu Given E^@(Mg^(2+)//Mg) = - 2.37V , E^@(Cu^(2+)//Cu) =+0.34V

Calculate the half cell potential at 25^@C for the cell reaction Cu^(2+)(aq)+2erarrCu , When [Cu^(2+)]=4M and E^@(Cu^(2+)//Cu)=0.34V .

Predict whether we can store CuSO_(4) solution in a zinc vessel from the following data. Show your calculation. E_(Zn^(2+)//Zn)^(@) = 0.76V E_(Cu^(2+)//Cu)^(@) = 0.34V

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MBD PUBLICATION-ELECTROCHEMISTRY-QUESTION BANK
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  2. An unit of charge is :

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  3. A cell is set up between ‘Zn’ and ‘Cu’ electrode. If the two half cell...

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  4. In galvanic cell, the salt bridge is used to :

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  5. A current of 2 ampere was passed through solution of CuSO4 and AgNO3 i...

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  6. The emf of the cell involving following changes Zn(s)+Ni^(2+)(1M)rarrZ...

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  7. A current of 2.6 ampere was passed through CuSO4 solution for 380 sec....

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  8. E^(@) values of Mg^(2+) //Mg is -2.37V, of Zn^(2+)//Zn is -0.76V and F...

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  9. On passing electricity through diluteH2SO4 solution the amount of subs...

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  10. Passage of 96500 coulmb of electricity liberates…….. Litre of O2 at NT...

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  11. During electrolysis of an aqueous solution of Cu^(2+) sulphate , 0.635...

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  12. The number of electrons involved in redox reactions when a faraday of ...

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  13. If Mg^(2+) +2e rarrMg(s), E=-2.37 V, Cu^(2+) + 2e rarrCu(s),E=+0.34V ...

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  14. A certain quantity of electricity is passed through aqueous solution o...

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  15. Which is correct representation for a cell at equilibrium:

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  16. Out of Cu,Ag,Fe and Zn the metal which can displace all other from the...

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  17. The thermodynamic efficiency of cell is given by :

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  18. In which of the following will the corrosion of iron be most rapid :

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  19. In a concentration cell:

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  20. The electrolytic bath used in gold plating of copper articles contains...

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