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If the e.m.f of a galvanic cell is negat...

If the e.m.f of a galvanic cell is negative , it implies that :

A

the cell reaction is spontaneous

B

the cell reaction is non-spontaneou

C

the cell reaction is exothermic

D

the cell is working in reverse direction

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The correct Answer is:
B, D
If Ecell is negative reaction is non spontaneous
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AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-II (LECTURE SHEET ( EXERCISE -I ( SINGLE & ONE OR MORE THAN ONE CORRECT ANSWER )))
  1. Which of the following changes will increase the emf of the cell : C...

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  2. For the cell given below Zn|Zn^(2+)||Cu^(2+) | Cu, (E("cell")-E("cel...

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  3. If the e.m.f of a galvanic cell is negative , it implies that :

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  4. When a lead storage battery is discharged :

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

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  6. Identify the true ones

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  7. The cell emf depends on

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

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  9. Which of the following facts are true ?

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  10. In a lead storage battery

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

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

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

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

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

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

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

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

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

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

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