A calculation in Model 1 shows that an electrical current of 7.50 A deposits 4.56 g of Fe in 35.0 min. Using this calculation, answer: a) How many moles of electrons flowed through the cell in 35 minutes? b) How many moles of Fe were plated onto the cathode in 35 minutes? c) Why is the ratio (moles of electrons)/(moles of Fe)=2?

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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.