Question

Which of the following is non-electrolyte?

• A. $NaCl$
• B. $CaC{l}_2$
• C. $C_{12}{H}_{22}{O}_{11}$
• D. $C{H}_{3}COOH$

Answer 1

The correct option is C $C_{12}{H}_{22}{O}_{11}$

Covalently bonded compounds, in which no ions are present, are commonly nonelectrolytes. Ionically bonded substances act as electrolytes.

• $NaCl$ and $CaC{l}_2$ are ionic salts and they will completely dissociates into ions. Therefore they are also called strong electrolytes.
• $C_{12}{H}_{22}{O}_{11}$ is a sugar and it is a covalent compound. So it is a non-electrolyte.
• $C{H}_{3}COOH$ or acetic acid is a weak electrolyte because its dissociation constant is small meaning there will be few ions in solution to conduct electricity.