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Identify the true ones...

Identify the true ones

A

Daniel cell is a reversible cell

B

Lead storage battery is a reversible cell

C

`Zn//H_2SO_4//Ag ` cell is reversible

D

Any reversible cell will receive current flow from the external source when connected if its emf is less than that of the source.

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The correct Answer is:
A, B, D
a) `Zn , Zn^(+2) , Cu^(+2) , Cu` reversible cell
b) `Pb_((s)) + Pbo_(2(s)) + 2H_2 So_(4(aq)) underset("charging")overset("working")iff 2PbSo_(4(s)) + 2H_(2(l)o)` reversible
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AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-II (LECTURE SHEET ( EXERCISE -I ( SINGLE & ONE OR MORE THAN ONE CORRECT ANSWER )))
  1. When a lead storage battery is discharged :

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  2. If the half cell reaction A to e^(-) to A^(-) has a larger negative po...

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  3. Identify the true ones

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  4. The cell emf depends on

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  5. The cell emf in a cell with cell reaction Cr2O7^(2-) + 14H^(+) + 6Fe^(...

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  6. Which of the following facts are true ?

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  7. In a lead storage battery

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  8. Which one is correct among the following give, the half cell emf's E^...

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

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  10. The value of the reaction quotient ,Q for the cell Zn(s) |Zn^(2+) (0.0...

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  11. DeltaG = DeltaH-TdeltaS and DeltaG = DeltaH + T[(d(DeltaG))/(dT)] " ...

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  12. For the cell Zn|Zn^(2+) (C1)||Zn^(2+) (C2)|Zn. DeltaG is negative if :

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  13. The Nernst equation , E = E^(0) -(RT)/(nF) . In Q indicates that the ...

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  14. The half cell reaction for the corrosion are , 2H^(+) + (1)/(2) O2 + ...

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  15. The E^(@) at 25^(@)C for the following reaction at the indicated conc...

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  16. A fuel cell develops an electrical potential from the combustion of b...

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  17. For a cell reaction 2H(2(g)) + O(2(g)) to 2H2O((l)) DeltaS(298)^(@) ...

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  18. Copper reduces NO3^(-) into NO and NO2 depending upon concentration of...

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  19. Consider the following standard reduction potentials Fe^(3+)(aq) + e...

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  20. Which of the following statements is / are correct ?

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