Question:
Which of the following solutions will have the highest electrical conductivity?
Which of the following solutions will have the highest electrical conductivity?
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Conductivity needs free ions; salt gives ions, sugar and alcohol do not.
Updated On: Oct 1, 2026
- Distilled water
- Sugar solution
- Salt solution
- Alcohol solution
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
A solution conducts electricity by the movement of ions. More ions means higher conductivity.
Step 2: Compare:
Distilled water has very few ions (about \(10^{-7}\) M), so it is a poor conductor.
Sugar and alcohol are non-electrolytes. They dissolve as molecules and give no ions.
Salt dissociates fully into \(\text{Na}^+\) and \(\text{Cl}^-\), so the salt solution conducts best.
Final Answer:
The salt solution has the highest conductivity, option (C). \[ \boxed{\text{Salt solution}} \]
A solution conducts electricity by the movement of ions. More ions means higher conductivity.
Step 2: Compare:
Distilled water has very few ions (about \(10^{-7}\) M), so it is a poor conductor.
Sugar and alcohol are non-electrolytes. They dissolve as molecules and give no ions.
Salt dissociates fully into \(\text{Na}^+\) and \(\text{Cl}^-\), so the salt solution conducts best.
Final Answer:
The salt solution has the highest conductivity, option (C). \[ \boxed{\text{Salt solution}} \]
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