Which of the liquids would you expect to have the highest vapor pressure at room temperature? H2O, CH3OH, CH3CH2OH, CH3CH2-O-CH2CH3, HO-CH2-CH2-OH

Which compound would you expect to have the highest boiling point? Why? a.H2Ob.H2Sc.HCl

5-75 The heat of vaporization of liquid Freon-12, CCI2F2, is 4.71 kcal/mol. Calculate the energy required to vaporize 39.2 g of this compound. The molecular weight of Freon-12 is 120.9 amu.

Arrange each of the following sets of compounds in order of increasing boiling point temperature: (a) HCl,H2O,SiH4 (b) F2,Cl2,Be2 (c) CH4,C2H6,C3H8 (d) O2,NO,N2

Answer the questions below, by filling in the blanks with LT for is less than, GT for is greater than, EQ for is equal to, or MI for more information required. (a) At 50C, benzene has a vapor pressure of 269 mm Hg. A flask that contains both benzene liquid and vapor at 50C has a pressure 269 mm Hg. (b) Ether has a vapor pressure of 537 mm Hg at 25C. A flask that contains only ether vapor at 37C has a pressure 537 mm Hg. (c) The boiling point of H2O the boiling point of C3H8. (d) The energy required to vaporize liquid bromine the energy required to decompose Br2 into Br atoms. (e) The dispersion forces present in naphthalene, C10H8, the dispersion forces present in butane, C4H10.

When a doughnut is placed on a napkin, the napkin will often absorb a liquid and appear moist. What is most likely the nature of the liquid?