Question

http://www.dnatube.com/video/2934/Galvanic-Cell-Animation-ZnCu

From the like, u can see an animation of galvanic cell. I need a clear explanation about how the charge flow occur in the salt bridge. From the animation, i notice that the charge flow is completed by ion in KCl(salt bridge), will the K+ or Cl+ ion get depleted and cause the galvanic cell fail to function regardless less of concentration of the zinc sulphat and copper sulphate solution and the condition of electrode.

Answer 1

and wil the K+ ion concentration in the copper sulphate solution increase over time if there is charge flow in the galvanic cell?

Answer 2

As the zinc loses electrons which means the concentration of Positive will increase by time

to neutralize this thing Cl- goes in the zinc sulphate solution. Where as as the copper gets electrons and to neutralize this effect K+ goes in copper sulphate solution.

Salt bridge is chosen wisely as the ions should not interfere with other ions.

Answer 3

and by time if all of the ions are depleted on salt bridge that will cause rise in positive and negative ions concentration and hence the cell will malfunction

Answer 4

Ok now if i have a porous pot voltaic cell:



How the ion flow to neutralize the charge on both side?