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Given that E(Ni^(2+)//Ni)^(@)=-0.25V, ...

Given that
`E_(Ni^(2+)//Ni)^(@)=-0.25V, E_(Cu^(2+)//Cu)^(@)=+0.34V`,
`E_(Ag^(+)//Ag)^(@)=+0.80V , E_(Zn^(2+)//Zn^(-))=-0.76V`.
Which of the following redox processes will not take place in specified direction ?

A

`Ni^(2+)(aq)+Cu(s)rarr Ni(s)+Cu^(2+)(aq)`

B

`Cu(s)+2Ag^(+)(aq)rarr Cu^(2+)(aq)+2Ag(s)`

C

`Cu(s)+2H^(+)(aq)rarr Cu^(2+)(aq)+H_(2)(g)`

D

`Zn(s)+2H^(+)(aq)rarr Zn^(2+)(aq)+H_(2)(g)`

Text Solution

Verified by Experts

The correct Answer is:
A, C
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Given that, E_(Ni^(2+)//Ni)^(@)=-0.25 V, E_(Cu^(2+)//Cu)^(@)=+0.34 V E_(Ag^(+)//Ag)^(@)=+0.80 V, E_(Zn^(2+)//Zn)^(@)=-0.76 V Which of the following redox processes will not take place in specified direction ?

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NARAYNA- ELECTRO CHEMISTRY-LEVEL-VI
  1. Which of the following statements is/are correct ?

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  2. When a concentrated solution of an electrolyte is diluted

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  3. Given that E(Ni^(2+)//Ni)^(@)=-0.25V, E(Cu^(2+)//Cu)^(@)=+0.34V, E...

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  4. Which of the following statements is correct? If E(Cu^(2+)|Cu)^(@)=0.3...

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  5. 2 amperes of current is passed for 16 min and 5 second through 1000 ml...

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  6. For the cell Tl|Tl^(+)(0.001M)||Cu^(2+)(0.01M)|Cu.E("cell") at 25^(@)C...

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  7. For the cell (at 298K) Ag(s) | AgCl(s) | Cl^(-)(aq)|| AgNO(3)(aq) | ...

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  8. The potential of an electrode when each species involved in it exists ...

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  9. The potential of an electrode when each species involved in it exists ...

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  10. The potential of an electrode when each species involved in it exists ...

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  11. In a lead storag battery, Pb (anode) and PbO(2) (cathode) are used. Co...

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  12. In a lead strage battery, Pb(anode) and PbO(2) (cathode) are used. Con...

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  13. In a lead strage battery, Pb(anode) and PbO(2) (cathode) are used. Con...

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  14. In a lead storag battery, Pb (anode) and PbO(2) (cathode) are used. Co...

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  15. In a lead storag battery, Pb (anode) and PbO(2) (cathode) are used. Co...

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  16. Read the following passage for the evaluation of E^(@) when different ...

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  17. Read the following passage for the evaluation of E^(@) when different ...

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  18. Read the following passage for the evaluation of E^(@) when different ...

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  19. For an electrode reaction written as M^(n+)+n e^(-)rarr M , E("red...

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  20. For an electrode reaction written as M^(n+)+n e^(-)rarr M , E("red...

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