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InterviewSolution
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The function of a salt bridge is to .A. eliminate the impurities present in the electrolyteB. eliminate liquid-junction potential where the ions are present in excess at the junctionC. decrease the cell potential at the negative electrodeD. increase the cell potential at the positive electrode |
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Answer» Correct Answer - B A salt bridge can be any medium through which ions can slowly pass . A salt bridge can be made by bending a piece of glass tune into the shape of a 'U' , filling it with a hot saturated salt `//5%` agar-agar solution, and allowing it to cool. The cooled mixture 'sets' to the consistency of firm gelatin. As a result, the solution does are still able to move. A salt bridge serves three functions : (a) It allows electrical contact between the two solutions. (b) It prevents mixing of the electrode solutions. (c ) It maintains the electrical neutrality in each half-cell as ions flow into and out of the salt bridge. |
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