Problem: Electrical conductivities of water and two aqueous solutions.Which solute will cause the lightbulb in the following figure to glow most brightly?

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Recall electrolyte solutions conduct electricity because ions are moving through the solution.

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Problem Details


Two electrodes, connected through a lightbulb, are immersed in a glass of pure water. The lightbulb is not lit. Pure water does not conduct electricity. Two electrodes, connected through a lightbulb, are immersed in a glass of an aqueous solution containing sucrose C12H22O11. The lightbulb is not lit. This solution does not conduct electricity. Two electrodes, connected through a lightbulb, are immersed in a glass of an aqueous solution containing sodium chloride NaCl. The lightbulb is lit. This solution conducts electricity.


Electrical conductivities of water and two aqueous solutions.

Which solute will cause the lightbulb in the following figure to glow most brightly?

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Our tutors have indicated that to solve this problem you will need to apply the Electrolytes concept. You can view video lessons to learn Electrolytes. Or if you need more Electrolytes practice, you can also practice Electrolytes practice problems.