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Discuss construction and uses of conductivity cell. |
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Answer» Solution :* It is an instrument to measure the IONIC conductivity/resistivity of electrolytic solution. * It is available in several designs and two simple ones are shown in the following diagram.  * CONSTRUCTION : Basicaly, it consists of two platinum electrodes coated with platinum black (finely divided metallic Pt is deposited on the electrodes electrochemically). * These have area of cross SECTION equal to .A. and are separated by DISTANCE .l.. * THEREFORE, solution confined between these electrodes is a column of length l and area of cross section A. * Uses : By using conductivity cell conductivity and resistivity of unknown solution can be measured. |
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