Calculate the DHLL activity coefficient for Cl- or Fe3+in a solution of FeCl3 that is 0.1 m in concentration. Suppose you dissolve NaCl in a 0.1 m HCI solution so that the final concentration of the salt is 0.2 m NaCl. Wha Will be the DHLL activity coefficients for Na+, H+, and Cl-?

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Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.