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From the following E^@ values of half ce...

From the following `E^@` values of half cells
`(i) A to A^(+)+e, E^@=+1.2V`
(ii) `B^(-) to B+e, E^@=-2.1V`
`(iii) C to C^(2+) +2e, E^@=0.38V`
(iv) `D^(-2) to D^(-) +e, E^@=-0.59V`
What combination of two half cells would result in a cell with the largest potential?

A

(i) and (iv)

B

(ii) and (iii)

C

(iii) and (iv)

D

(i) and (ii)

Text Solution

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B
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BODY BOOKS PUBLICATION-ELECTROMOTIVE FORCE -EXERCISE
  1. The standard reduction potentials E^@ for the half reactions are as ...

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  2. From the following E^@ values of half cells, (i) A+e to A^(-) , E^@=...

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  3. From the following E^@ values of half cells (i) A to A^(+)+e, E^@=+1...

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  4. From the following E^@ values of half cells (i) A^(3-)to A^(2-) +e,...

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  5. IF the following half cells have the E^@ values as Fe^(3+)+e to Fe^(...

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  6. E^@ (red.) values of the half cells Mg^(2+)//Mg and Cl2//Cl^- are resp...

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  7. For the cell reaction Zn(s)+Mg^(2+) (1M)=Zn^(2+) (1M) +Mg, the emf has...

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  8. E^@ for F2+2e=2F^(-) is 2.8V, E^@ for 1/2 F2+e=F^(-) is

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  9. Delta G^@ of the cell reaction AgCl(s)+1/2H2(g)=Ag(s)+H^+ +Cl^(-) is ...

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  10. The value of equilibrium constant for the feasible cell reaction is

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  11. E^@ for the reaction Fe+Zn^(2+)=Zn+Fe^(2+) is -0.35 V. The given cell...

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  12. A galvanic cell is composed of two hydrogen electrodes, one of which i...

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  13. 1/2 H2(g)+AgCl(s)=H^+ (aq)+Cl^(-) (aq)+Ag(s) occurs in the galvanic c...

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  14. For the cell Tl|Tl^(+) (0.001M) ||Cu^(2+) (0.1M) |Cu. E(cell) at 25^@C...

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  15. (i) E^@ (Cu^(2+),Cu)=0.34V (ii) E^@(Cu^+,Cu)=+0.52V (iii) E^@[O2(...

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  16. Given below the half cell reactions Mn^(2+)+2e to Mn, E^@=-1.18V 2...

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  17. In a galvanic cell, the salt bridge

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  18. Galvanisation is applying a coating of

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  19. For the following electrochemical cell at 298 K Pt (s)|H2(g) (1 ba r...

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  20. Given: E(Cl2,Cl^-)^@=1.36V, E(Cr^(3+),Cr)^@=-0.74V E(Cr2O7,Cr^(3+))^...

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