First slide

Electrochemical cells

Question

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

Moderate

A

the cell reaction is spontaneous
B

the cell reaction is non-spontaneous
C

the cell reaction is exothermic
D

the cell is working in reverse direction

Solution

emf of galvanic cell becomes – x volts when it is connected to external battery with high voltage

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