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2. Electrochemistry — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry2. Electrochemistry1 Mark
MCQ
A negative $e.m.f.$ for a cell represents
  • A
    Electrons will flow through external circuit in reverse direction.
  • B
    The opposite half cell reaction will take place spontaneously.
  • C
    The given reaction will not be spontaneous
  • ✓
    All of the above
✓

Answer

Correct option: D.
All of the above
d
$EMF$ of the cell is always the difference in higher reduction potential and lower reduction potential. If the $EMF$ is negative, it indicates that the electron flow is in the reverse direction, both the reactions are not as spontaneous as they should be.

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