
Chemistry In Focus
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ISBN: 9781337399692
Author: Tro, Nivaldo J.
Publisher: Cengage Learning,
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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
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8.52 Rank the following hydrocarbons in order of increasing vapor pressure: C2H6,C10H22,CH4,C7H16,C22H46 .
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For each of the following pairs, predict which substance is more soluble in water. a. CH3NH2 or NH3 b. CH3CN or CH3OCH3 c. CH3CH2OH or CH3CH2CH3 d. CH3OH or CH3CH2OH e. (CH3)3CCH2OH or CH3(CH2)6OH f. CH3OCH3 or CH3CO2H
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Which contains the compounds listed correctly in order of increasing boiling points? (a) N2CS2H2OKCl (b) H2ON2CS2KCl (c) N2KClCS2H2O (d) CS2N2KClH2O (e) KClH2OCS2N2
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Which compound would you expect to have the highest boiling point? Why? a.H2Ob.H2Sc.HCl
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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.
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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.
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