Question

 A ------ is that electrode whose potential is known and remains constant. A) Reference electrode B) Indicator electrode C) pH electrode D) counter electrode

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Answer 1

Answer:

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Answer 2

The potential is known and remains constant for a reference electrode

• In titration different types of electrodes are used for different purposes.
• Reference electrode - It is a type of electrode used in potentiometry, that has a known and constant value of electric potential. It is used to find out the value of the potential of the unknown half cell.
• Indicator electrode - It is a type of electrode used in potentiometry whose value differs according to the activity of the ions in the titration.
• pH electrode - It is a type of electrode that is used to measure the activity of H⁺ ions
• Counter electrode - It is a type of electrode used to complete a circuit/ close a circuit.

Thus, a reference electrode is that electrode whose potential is known and remains constant.