Which of these solutions could be an electrolyte?

An electrolyte is a compound that disassociates into ions and conducts electricity when dissolved in water.

• 
  Strong electrolytes completely disassociate into ions when dissolved in water. Examples of strong electrolytes include: soluble ionic substances, strong acids, and strong bases.

• 
  Weak electrolytes partially disassociate into ions, while some of the compound remains undisassociated. Examples of weak electrolytes include slightly soluble salts, weak acids, and weak bases.

A nonelectrolyte is a compound that does not disassociate into ions or conduct electricity when dissolved in water. Examples of nonelectrolytes include nonpolar covalent compounds and weakly polar covalent compounds that do not disassociate into ions.

In the picture,

• the first beaker is an example of a strong electrolyte because all of the solute has disassociated into positive and negative ions.

• the second beaker is an example of a weak electrolyte because some of the solute has disassociated into positive and negative ions, while some has remained undisassociated.

• the third beaker is an example of a nonelectrolyte because none of the solute has disassociated into ions.