If the same diameter needle is used for each follicle and two insertions are made with one shallow and one deep insertion, what will be the NaOH production in each follicle?

• A. The same amount of NaOH is produced in each follicle
• B. More NaOH is produced in the deep insertion
• C. More NaOH is produced in the shallow insertion
• D. No NaOH is produced

Answer: (A)

NaOH production in galvanic electrolysis depends on the electrical charge that passes through the follicle, which is the product of current and time, and on the electrode’s surface area. Using the same diameter needle ensures the same active surface area, and applying the same current for the same duration delivers the same amount of charge to each follicle. Depth of insertion doesn’t change the total charge delivered or the amount of NaOH generated; it only changes where within the follicle the reaction happens. Therefore, the same amount of NaOH is produced in each follicle.