First slide

Electrochemical cell

Question

The function of a salt bridge is

Easy

A

to provide a link between two half cells
B

to allow ions to go from one cell to another
C

to keep the emf of the cell positive
D

to maintain electrical neutrality of the solution in two half cells

Solution

In galvanic cell if there is no salt bridge
Anode looses electrons and positive charge is accumulated.
Cathode gains electrons and negative charge is accumulated. Accumulation of charges prevents flow of electrons and cell reaction does not occur.
Salt bridge is present
Prevents accumulation of charges by flowing the ions of elctrolyte of saltbridge in opposite direction and fecilitates flow of electrons.

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