Ethanol is the solute Water is the solventThe free energy of solution is negative Hydrogen bonds are predominant CAll of the above 2.If the heat of solution is positive: A solution will not be made The solvent-solvent and solute-solute bonds are stronger than the solvent-solute bonds The solvent-solvent and solute-solute bonds are weaker than the solvent-solute bondsA solution will definitely be made None of the above 3.The saying"like dissolves like"means: Molecules of similar sizes form solutions Moleculesof smiar shape Molecules having similar intermolecular forces form solutions None of the above All of the above 4.The fundamental reason for freezing point depression,boiling point elevation and osmotic pressure is: Theenropyofsoiniser than that ofthe pureso The vapor pressure fithan tha fh puresoe The than that pure solvent Sovent moecule are held tighty insoio by thesoemoue None of the above
Ethanol is the solute Water is the solvent The free energy of solution is negative Hydrogen bonds are predominant All of the above 2. If the heat of solution is positive: A solution will not be made The solvent-solvent and solute-solute bonds are stronger than the solvent-solute bonds The solvent-solvent and solute-solute bonds are weaker than the solvent-solute bonds A solution will definitely be made None of the above 3. The saying "like dissolves like" means: Molecules of similar sizes form solutions Molecules of similar shape form solutions Molecules having similar intermolecular forces form solutions None of the above All of the above 4. The fundamental reason for freezing point depression, boiling point elevation and osmotic pressure is: The entropy of a solution is lower than that of the pure solvent The vapor pressure of a solution is lower than that of the pure solvent The free energy of vaporization of a solution is more negative than that of the pure solvent Solvent molecules are held tightly in a solution by the solute molecules None of the above
5.Which of the following statements is true? Theeryosopi constantis fuetion fhe identityfhoue The value ofthe ebullioscopic constant depends on how much solute is present The osmotic pressure is not a function of temperature Themagnitude ofthe freenont depressond boiling ointinhe same for a given solution None of the above 6.A 1 m solution of NaCl has a lower boiling point than 1m NazSO Why? 1m NaSO conin more ions than 1m NaCk The SOion is larger than the Cr ion Na,SO has a larger molecular weight than NaCI NaCl has a lower boiling point than Na None of the above 7.Water has a higher boiling point than helium because: Water hasa higher moleuar weight than helium Water hydrogen bonds with itsefand helium does no Water has larger dispersion forces than doeshelium Heliumiswaysasitdes not have a boiling point None of the above 8.Liquid water will rise up a narrow capillary tube because Water and glass are made of the same molecule
5. Which of the following statements is true? The cryoscopic constant is a function of the identity of the solute The value of the ebullioscopic constant depends on how much solute is present The osmotic pressure is not a function of temperature The magnitude of the freezing point depression and boiling point elevation are the same for a given solution None of the above 6. A 1 m solution of NaCl(aq) has a lower boiling point than 1 m Na2SO4(aq). Why? 1 m Na2SO4(aq) contains more ions than 1 m NaCl(aq) The SO4 -2 ion is larger than the Cl- ion Na2SO4 has a larger molecular weight than NaCl NaCl(l) has a lower boiling point than Na2SO4(l) None of the above 7. Water has a higher boiling point than helium because: Water has a higher molecular weight than helium Water hydrogen bonds with itself and helium does not Water has larger dispersion forces than does helium Helium is always a gas - it does not have a boiling point None of the above 8. Liquid water will rise up a narrow capillary tube because: Water and glass are made of the same molecules
The water is trying to esape from the caillary There are sron atiractive fores between the glass and the water Glass is electrostatically charged 9.Boiling point is a function of the existing atmospheric pressure because: Higher pressure usually means warmer weather Higher pressure causesmoreair to dissolve in theliquid None of the above 10.Raoult's law states: Ifyou murder someone,you will go tojail Thevapor prerishiher thntha fth ursovnt involatile solute The vapor pressure boveoisoprionthevapr esure of the pure involatile solute The vapor pressure bovsotinis oprialto the moe fraction ofh solvent Answer: Question 1. All of these are truel Question 2
The water is trying to escape from the caillary There are strong attractive forces between the glass and the water Glass is electrostatically charged 9. Boiling point is a function of the existing atmospheric pressure because: Higher pressure usually means warmer weather Lower pressure allows "easier" evaporation of the liquid Higher pressure causes more air to dissolve in the liquid None of the above 10. Raoult's law states: If you murder someone, you will go to jail The vapor pressure above a solution is higher than that of the pure solvent The vapor pressure above a solution is proportional to the mole fraction of the involatile solute The vapor pressure above a solution is proportional to the vapor pressure of the pure involatile solute The vapor pressure above a solution is proportional to the mole fraction of the solvent Answer: Question 1. All of these are true! Question 2