Answer to Question #56769 in General Chemistry for Aleshia

Question #56769
Bonus Question: True or false 1. Water (H2O) and the alcohol methanol (CH3OH) are infinitely soluble in each other. The primary intermolecular force responsible for this is hydrogen bonding. 2. In the solution process, the breaking of solute particles is an exothermic process because energy is released when molecules are separated. 3. Entropy change in the solution process is generally positive. 4. Non-polar solutes are generally insoluble in nonpolar solvents. 5. Colligative properties depend on the kind or identity of the solute particles. 6. Solubility of gases in water increases at higher temperature. 7. Solubility of gases in water increases at lower partial pressure. 8. Solubility of solid solutes in water generally increases at higher temperature. 9. Addition of a nonvolatile solute to a solvent lowers the vapor pressure and raises the boiling point of the solution. 10. The semipermeable cell membrane in red blood cell permits water and small molecules such as ions to pass through.
Expert's answer
1. True
2. True
3. True
4. False (Nonpolar solutes are generally insoluble in polar solvents)
5. False (Colligative properties depend only on the number of dissolved particles in solution and not on their identity. Non-colligative properties depend on the identity of the dissolved species and the solvent)
6. False (Gases are usually more soluble in cold water than in hot water)
7. False (The solubility of gases depends on the pressure: an increase in pressure increases solubility, whereas a decrease in pressure decreases solubility)
8. True
9. False (The boiling point of a solvent is increased by the addition of a non-volatile solute).
10. True

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