Standard Hydrogen Electrode MCQ - Practice Questions with Answers

A hydrogen electrode in which pressure of hydrogen gas is maintained at 1 atm and the concentration of H⁺ ions in the solution is 1M, is called a standard hydrogen electrode (SHE).

• The emf of a standard hydrogen electrode is taken as 0.00 V at all temperature.
• It is a reversible electrode.
• It is used as a reference electrode.
• A saturated calomel electrode is also used as a secondary reference electrode. It has a potential of -0.24 volt.