1. Sea water is a homogeneous solution containing salts and water. Answer: _____

Question

1. Sea water is a homogeneous solution containing salts and water. Answer: _______

2. In the solution process, the breaking of solute particles is an endothermic process because energy is released when molecules are separated. Answer: _______

3. Entropy change in the solution process is generally positive. Answer: _______

4. Nonpolar solutes are generally insoluble in nonpolar solvents. Answer: _______

5. Decreasing partial pressure lowers the solubility of gases, liquids and solids. Answer: _______

6. Solubility of gases in water generally decreases at lower temperature. Answer: _______

7. Solubility of gases in water generally decreases at lower partial pressure. Answer: _______

8. Solubility of solids in water generally increases at lower temperature. Answer: _______

9. Molarity varies with temperature, whereas molality remains unaffected by varying temperature. Answer: _______

10. The semipermeable cell membrane in red blood cells permits water and small molecules such as salts to pass through. Answer: _______

Explanation / Answer

Though we are supposed to answer the first question, i will answer first four for you.

1. True

homogeneous solutions are the ones, that have same composition throughout. Sea water has same concentration of salt and water throughout

2. False

a process is called exothermic when energy is released, and endothermic when energy is absorbed

3. True

Entropy is a measure of disorderedness or randomness in a system. Solute Dissolves in a solution by breakage of its bonds, ions are released into solution which increase the randomness and hence positive entropy change.

4. False

non polar solutes are soluble in non polae solvents and polar solutes in polar solvents.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.