Question

Which of the following effects is not prodused by the chemical reactions brought about by an electric current?
A. bubbles of gases on electrodes
B. deposits of metals on electrodes
C. change in color of solution
D. formation of a precipitate

Answer 1

Answer:

A&Bare both the answer

Answer 2

D. formation of a precipitate is not produced by chemical effect of electric current.

Explanation:

• During electrolysis process, there is liberation of oxygen and hydrogen due to electrochemical process which forms bubbles on electrode or surface of electrolyte.
• The metals of electrode reacts with electrolyte to form, metal deposits on electrolyte.
• Due to chemical effect of electric current, there is change in color of electrolyte or electrode.
• When there is chemical reaction in acid or base, there is formation of precipitation. There is no formation of precipitate during electrolytic process.