Why is Standard hydrogen electrode called as the primary reference electrode?
A. It has a known output potential
B. It has a constant output potential
C. Its output potential is independent of the composition of the solution
D. Its output potential is zero volts
Answer:D
Why is Standard hydrogen electrode called as the primary reference electrode?
A. It has a known output potential B. It has a constant output potential C. Its output potential is independent of the composition of the solution D. Its output potential is zero volts
Explanation: Standard hydrogen electrode is called the primary reference electrode as its output potential is zero volts. It is employed in conjunction with the indicator or working electrode.