Experiment 7


To find the strength of hydrochloric acid solution (approximately N/10) by titrating it against sodium hydroxide solution conductometrically.




Figure Ex 7.1 Conductance curve of strong acid vs. strong base


Conductometry can be used to detect the equivalence point (end point) of a titration. This method is based upon the measurement of conductance during the course of a titration. The Conductance varies differently before and after the equivalence point. This is due to the reason that electrical conductance of a solution depends upon the number of ions present and their ionic mobilities, i.e., speeds.

When conductance ...

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