* Electrolytes are substances that conduct electricity when dissolved in water. This happens because they dissociate into ions (charged particles) when in solution.
* Potassium nitrate (KNO3) is an ionic compound. When it dissolves in water, it breaks apart into potassium ions (K+) and nitrate ions (NO3-). These ions are free to move, allowing the solution to conduct electricity.
Let's break down why other options aren't the best fit:
* Nonelectrolyte: These substances do not dissociate into ions when dissolved in water, so they cannot conduct electricity. Examples include sugar and ethanol.
* Colloid: Colloids are mixtures where particles are dispersed throughout a medium. They can be opaque or translucent, but the particles are large enough to scatter light. Potassium nitrate solution is transparent and doesn't exhibit this scattering.
* Suspension: Suspensions are mixtures where particles are large enough to settle out over time. Potassium nitrate dissolves completely in water and doesn't form a suspension.
In summary: A dilute aqueous potassium nitrate solution is an electrolyte due to the presence of ions formed when the salt dissolves.
