Question

Which of the following is not an after effect to a current passing through a conducting liquid?

• A. Colour of the solution may change.
• B. Temperature of the solution may increase.
• C. Bubbles can be seen near the electrodes.
• D. Electrolyte solidifies to form a concentrate.

Answer 1

The correct option is D Electrolyte solidifies to form a concentrate.

When current passes through a liquid, there is a chemical change happening in the liquid. The possible observations are: Change in Colour, temperature and liberation of gases.

However, in the process, if one ion from the electrolyte moves to the electrode, then one ion from the electrode moves to the electrolyte, keeping the number of ions a constant. As the number of ions involved are constant throughout the process, the liquid electrolyte does not solidify.