Question
Three electrolytic cells A, B and C are connected with identical bulbs in separate circuits as shown in the diagram. Electrolytic cell A contains sodium chloride solution and Electrolytic cell B contains acetic acid solution. The electrolytic cell C contains distilled water.
(a) In which Set-up will the bulb glow the brightest? Justify your answers. (b) In which Set-up will the glow of the bulb be quite dim? Justify your answers. (c) In which Set-up will the bulb not glow at all? Justify your answers.
Answer
a) In Set-up A, because sodium chloride is a strong electrolyte.
b) In Set-up B, because acetic acid is a weak electrolyte.
c) In Set-up C, because distilled water is a bad conductor of electricity.