Although we often describe solubility behavior in terms of a substance being sol

Question

Although we often describe solubility behavior in terms of a substance being soluble (dissolved) or insoluble (not dissolved) in a solvent, solubility can be described quantitatively in terms of the exent to which a substance id soluble. All three of the compounds below dissolve in water to a certain extent. Consider their solubilities in water at roo temperature. Cholesterol: 0.002 mg/ml; Caffine 22mg/mL; Citric acid 620 mg Ml ina typical test for solute is added to 1 mL of solvent, the mixture is shaken, then allowed to sit for a short period of time. Assume you were testing the solubilint of these three substances in water. Which of the above three compounds will be soluble

Explanation / Answer

1. Properties of water pertaining to the reactions,

1) High Freezing point

2) High boiling point

3) High density

All these properties are attributed to the strong intermolecular H-bonding present in water.

2. Properties of capsaicin,

1) Low boiling (volatile)

2) low density

3) Low melting point

3. Of the three compounds listed here, citric acid would be completely soluble under these conditions.

4. Electrolytes are compounds which give ions when in solution. They are good conductors of electricity. Classified as weak and strong electrolytes depending upon the extent to which they dissociate and form ions in solution. On the other hand, a non-electrolyte does not give ions in solution.

(a) HF would conduct electricity when placed in solution

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