Question

Which of the following factors doesn't affect the process of electrolysis?
1) Concentration of the electrolyte
2) Galvanometer
3) Size of the electrode
4) Nature of the metal used
5) Current
6) Voltage

• A. 1 & 3
• B. only 2
• C. 4 , 5 & 6
• D. 2 , 4 & 5

Answer 1

The correct option is B only 2

Let us look at them one by one.
$$\begin{array}{cc}Change& EffectonReaction\\ \text{Increased current}& \text{Increased rate of electrolysis}\\ \text{Increased voltage}& \text{Increased current, and therefore}\\ & \text{increased rate of electrolysis}\\ \text{Increased concentration of ions in}& \text{Increased current, and therefore}\\ \text{electrolyte}& \text{increased rate of electrolysis}\\ \text{Increased surface area of electrodes}& \text{Increased current, and therefore}\\ & \text{increased rate of electrolysis}\\ \text{Decreased distance between electrodes}& \text{Increased current, and therefore}\\ & \text{increased rate of electrolysis}\\ \text{Inert electrode to active electrode}& \text{Electrode can oxidise}\end{array}$$
Size of the electrode would increase the surface area. So that also affects electrolysis.
From the above table, it is clear how the variation of such factors affects the process of electrolysis.
We can easily say that the galvanometer doesn't affect the process, although it helps us measure the amount of current passed.