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E(1),E(2)andE(3) are the emf of the fo...

`E_(1),E_(2)andE_(3)` are the emf of the following three cells
(i) `Zn(s)|Zn^(2+)(0.1M)||Cu^(2+)(1M)|Cu(s)`
(ii) `Zn(s)|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu(s)`
(iii) `Zn(s)|Zn^(2+)(1M)||Cu^(2+)(0.1M)|Cu(s)`
Which one of the following is true ?

A

`E_(2)gtE_(1)gtE_(3)`

B

`E_(1)gtE_(2)gtE_(3)`

C

`E_(3)gtE_(1)gtE_(2)`

D

`E_(3)gtE_(2)gtE_(1)`

Text Solution

Verified by Experts

The correct Answer is:
B
follow Nernst equation
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If E_(1),E_(2) and E_(3) are the emf values of the three galvanic cells respectivley (i) Zn|Zn^(2+)(1M)||Cu^(2+)(0.1M)|Cu (ii) Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu (iii) Zn|Zn^(2+)(0.1)||Cu^(2+)(1M)|Cu . Which one of the following is true.

E_(1) , E_(2) and E_(3) are the emfs of the following three galvanic cells respectively I. Zn((s)) | Zn^(2+) (0.1M) | | CU^(2+) (1M) | Cu((s)) II. Zn((s)) ZN^(2+) (1M) || Cu^(2+)(1M) | Cu(s) III. Zn(s) | Zn^(2+) (1M) || CU^(2+)(0.1M)CU(s)

The emf of the following three galvanic cells : 1. Zn//Zn^(2+) ( 1M) || Cu^(2+) (1 M) //Cu 2. Zn//ZN^(2+ ) (1 M)|| Cu^(2+) //cu 3. Zn//Zn^(2+) (1 M) || Cu^(2+) (0.1 M) Cu are repersented by E_1, E_2, E_3 which of the following statement is true ?

Write Nernst equation for the following cell reaction : Zn(s) | Zn^(2+)(aq)|| Cu^(2+)(aq) | Cu(s)

Find the emf of the cell Zn(s)|Zn^(+2)(0.01 M)|KCI "saturated" |Zn^(+2)(1.0 M)|Zn(s)

CENGAGE CHEMISTRY-ELECTROCHEMISTRY -MULTIPLE CHOICE QUESTIONS WITH ONE OR MORE THAN ONE CORRECT ANSWER
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  3. For the cell reaction Cu(s)+Cl(2)(aq)toCu^(2+)(aq)+2Cl-(aq) , cell no...

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  4. Given E(Ag^(+)//Cu)^(@)=0.80V,E(Hg^(2+)//Mg)^(@)=0.79V E(Cu^(2+)//...

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  5. Corrosion of metals can be prevented by

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  6. E(1),E(2)andE(3) are the emf of the following three cells (i) Zn...

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  7. If .E(Sn^(+4)//Sn^(+2))^(@)=+0.15andE(Au^(3+)//Au)^(@)=1.5v Then for t...

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  8. The E(M^(3+)//M^(2+))^(@) value of cr , Mn Fe and Co are - 0.41, +1.57...

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  9. If Cu^(2+)+2etoCu, E^(@)=0.337v,Cu^(2+)+e to Cu, E^(@)=0.153v the...

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  10. Given Pb^(2+)//Pb=-0.12v,Zn^(2+)//Zn=-0.763v find emf of the followin...

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  11. E^(@) for Mg^(2+)//Mg=-2.37v,Zn^(2+)//Zn=-0.76vandFe^(2+)//Fe=-0.44v ...

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  12. Hydrogen gas in not liberated when the following metal is added to d...

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  13. On the basis of the following E^(@) values the strong - est oxidising...

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  15. The standard reduction potential of hydrogen electrode at 1 M conc...

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  16. Alkali metals have high oxidation potential hence they behave as

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  17. When iron is rusted , it is

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  18. Chemical formula of rust is

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  19. The rusting of iron is catalysed by

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  20. Which one of the following metal is used in galvanisation ?

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