Part I: An aqueous solution is saturated in both potassium chlorate and carbon d

Question

Part I:
An aqueous solution is saturated in both potassium chlorate and carbon dioxide gas at room temperature. What happens when the solution is cooled to 0°C?
-noting happens; all of the potassium chlorate and the carbon dioxide remain at the same concentration levels
-potassium chlorate precipitates out of solution
-potassium chlorate precipitates out of solution and carbon dioxide bubbles out of solution
-carbon dioxide bubbles out of solution
-the solution becomes unsaturated in terms of potassium chlorate

Part II
Choose the statement below that is TRUE.
-A solution will form between two substances if the solute-solvent interactions are small enough to be overcome by the solute-solute and solvent-solvent interactions.
-None of the above are true.
-A solution will form between two substances if the solute-solvent interactions are of comparable strength to the solute-solute and solvent-solvent interactions.
-A solution will form between two substances if the solute-solute interactions are strong enough to overcome the solvent-solvent interactions.
-A solution will form between two substances only if the solvent-solvent interactions are weak enough to overcome the solute-solvent interactions.

Explanation / Answer

part 1:

KClO3 dissolves the least at 0 degree centigrade. as we know the least soluble one precipitate out first. and at 0 degree the CO2 gas gets absorbed the most. so thesolution becomes unsaturated in terms of KClO3 only.

part2:

none of the above are true.

lets take an example. NaCl in water. NaCl dissociates to form Na+ and Cl-. The water molecule must have sufficient attraction to overcome the attraction between two ions. Also the ions must have sufficient attraction to overcome attraction between solvent-solvent.

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