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Which solution is an example of an electrolyte?A.Sucrose in waterB.Methanol in waterC.Pentane in octaneD.Potassium iodide in water

Question

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Solution

To determine which solution is an example of an electrolyte, let's analyze each option based on what constitutes an electrolyte.

  1. Definition of Electrolyte: An electrolyte is a substance that dissociates into ions when dissolved in water, thereby conducting electricity.

  2. Analysis of Options:

    • A. Sucrose in water: Sucrose is a sugar that does not dissociate into ions; it remains as whole molecules in solution, thus it is a non-electrolyte.
    • B. Methanol in water: Methanol is an alcohol that also does not ionize in solution, making it a non-electrolyte.
    • C. Pentane in octane: Both pentane and octane are non-polar hydrocarbons that do not dissolve in water and do not form ions, hence not electrolytes.
    • D. Potassium iodide in water: Potassium iodide (KI) is an ionic compound that dissociates into potassium ions (K⁺) and iodide ions (I⁻) in solution, making it a strong electrolyte.
  3. Conclusion: Based on the analysis, the correct answer is:

Final Answer

D. Potassium iodide in water is an example of an electrolyte.

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