Question

Which of the following is true for a half cell reaction ?

• A. It involves only half a mole of electrolyte
• B. It goes only half way to completion
• C. It takes place at one electrode
• D. It consumes half a unit of electricity

Answer 1

The correct option is C It takes place at one electrode

In an electrochemical cell, a redox reaction occurs. Oxidation occurs at one electrode and reduction occurs at another electrode. A setup consisting of an electrode (anode or cathode) dipped in its salt solution is called half cell electrode. The reaction occuring at each electrode is known as half cell reaction.

Hence, option C is the correct one.