Which statement is not correct? A voltaic cell is a type of electrochemical cell
ID: 591770 • Letter: W
Question
Which statement is not correct?
A voltaic cell is a type of electrochemical cell.
An electrochemical cell can extract electrical energy from a reactant-favored chemical reaction.
Reduction occurs at the cathode in an electrochemical cell.
A battery is an example of an electrochemical cell.
All electrochemical cells have at least two electrodes.
*ONLY ONE ASNWER*
a.A voltaic cell is a type of electrochemical cell.
b.An electrochemical cell can extract electrical energy from a reactant-favored chemical reaction.
c.Reduction occurs at the cathode in an electrochemical cell.
d.A battery is an example of an electrochemical cell.
e.All electrochemical cells have at least two electrodes.
Explanation / Answer
An electrochemical cell has to supply electrical energy to drive a reactant favored reaction I.e. a non spontaneous reaction. It can extract energy from a spontaneous reaction which is product favored.
So the incorrect statement is (b).
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