A 0.25 M aqueous solution of potassium chloride,KCl,is tested for conductivity using the type of apparatus shown.What do you predict will happen?
A)The bulb will not light up - KCl is a nonelectrolyte
B)The bulb will not light up - KCl is in the molecular form when dissolved in water
C)The light bulb will shine dimly - KCl is only partially ionized in aqueous solution
D)The light bulb will shine brightly - KCl is highly ionized in aqueous solution

Question

A 0.25 M aqueous solution of potassium chloride,KCl,is tested for conductivity using the type of apparatus shown.What do you predict will happen? 
A)The bulb will not light up - KCl is a nonelectrolyte 
B)The bulb will not light up - KCl is in the molecular form when dissolved in water 
C)The light bulb will shine dimly - KCl is only partially ionized in aqueous solution 
D)The light bulb will shine brightly - KCl is highly ionized in aqueous solution

Quizplus · Accepted Answer

KCl is an ionic compound that dissociates into K+ and Cl- ions when dissolved in water. This means that it is highly ionized in aqueous solution, and therefore will conduct electricity well. As a result, the light bulb in the apparatus shown will shine brightly when the solution is tested for conductivity.

A 025 M Aqueous Solution of Potassium Chloride,KCl,is Tested for Conductivity