Why quinhydrone is used in potentiometric titration?
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Quinhydrone is used in potentiometric titration to determine the accuracy of the method that has been studied, pretreatment of the indicating electrodes, magnitude of the polarization current, generation current, relative position of electrodes in the titration cell and amount of water in the system titrated.
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Potentiometric titrations are experiments used for studying redox titrations.
In a chemical experiment, the quinhydrone electrode is a kind of a redox electrode which is used for measuring the pH or the hydrogen ion concentration of a solution. Quinhydrone is an equimolar mixture made from quinone (Q) and hydroquinone (H2Q).
Quinhydrone electrodes are used in potentiometric titrations to overcome the problems that are faced while using the hydrogen electrodes, where bubbling of hydrogen gas occurs to be the biggest issue. It also allows the use of un-platinized metal electrodes.
Also, another advantage of using the quinhydrone system is that it is adaptable to the pH measurement of the fluids containing CO₂, especially during biological work.
The best way to use quinhydrone in titration experiments is to saturate the solution that is to be measured with quinhydrone. Heavy platinum electrodes or 24-carat gold wire that is sealed in glass tubes.
In a chemical experiment, the quinhydrone electrode is a kind of a redox electrode which is used for measuring the pH or the hydrogen ion concentration of a solution. Quinhydrone is an equimolar mixture made from quinone (Q) and hydroquinone (H2Q).
Quinhydrone electrodes are used in potentiometric titrations to overcome the problems that are faced while using the hydrogen electrodes, where bubbling of hydrogen gas occurs to be the biggest issue. It also allows the use of un-platinized metal electrodes.
Also, another advantage of using the quinhydrone system is that it is adaptable to the pH measurement of the fluids containing CO₂, especially during biological work.
The best way to use quinhydrone in titration experiments is to saturate the solution that is to be measured with quinhydrone. Heavy platinum electrodes or 24-carat gold wire that is sealed in glass tubes.
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