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Indicate whether aqueous solutions of the following will contain only ions, only molecules, or mostly molecules and a few ions. You may use answers more than once. Question 5 options: ethanol, C2H5OH, a nonelectrolyte Na2SO4, a strong electrolyte HCN, hydrocyanic acid, a weak electrolyte

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Answer:

C2H5OH--- aqueous solution contains mostly molecules

Na2SO4---aqueous solution contains ions

HCN ---aqueous solution contains mostly molecules and a few ions

Explanation:

Only strong electrolytes dissociate completely in solution to form ions. Hence aqueous solutions of strong electrolytes comprises of ions which conduct electricity.

Weak electrolyte aqueous solutions contain mostly molecules since they ionize only to a very small extent in solution.

Nonelectrolytes remain molecular in solution and do not conduct electricity at all.

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