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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Arturo on November 16, 2019, 05:34:10 AM

Title: Why is salt bridge is essential in a voltaic/galvanic cell?
Post by: Arturo on November 16, 2019, 05:34:10 AM

Hello everyone,,,
It was given that accumulation of charge hinders the flow of electrons and hence the conversion of chemical energy to electrical energy stops after a while. If we connect an ammeter in series with the circuit we will see that the needle changes for a fraction of a second and then indicates that there is no flow of charges. Why does accumulation of charge in half cells result hinders the flow of current?

Title: Re: Why is salt bridge is essential in a voltaic/galvanic cell?
Post by: Borek on November 16, 2019, 11:50:27 AM

Simple physics. What do you know about behavior of charges? How is the potential defined?