a. True d. Heptane b. False 28. Which of the following liquids has the 22. The process of freezing absorbs lowest ΔHvap? energy to occur a. Carbon disulfide a. True b. Methanol b. False c. Ethanol d. Heptane 23. Vaporization is exothermic a. True b. False Answer the following questions (24-28) about the graph below 24. What would the normal boiling point be of Carbon Disulfide? 50 degrees 45 degrees 40 degrees 35 degrees 30 degrees 25 degrees Answer A if the following is soluble in water 25. If the external pressure was 300 mmHg, at and B if the following is not soluble in water what temperature would Ethanol boil? 80 degrees 29. LiCl 75 degrees A 70 degrees 30. C4H10 65 degrees B 60 degrees 31. NH4Cl 55 degrees A 32. PbCl2 26. Which of the following liquids has the B lowest viscosity? 33. NaOH A Carbon disulfide Methanol 34. CaCO3 Ethanol B Heptane 35. CH3CH2OH A 27. Which of the following liquids has the 36. C2H6 highest vapor pressure if kept in a closed B container? 37. MgS Carbon disulfide B Methanol 38. Ca(NO3)2 Ethanol A
a. True b. False 22. The process of freezing absorbs energy to occur a. True b. False 23. Vaporization is exothermic a. True b. False Answer the following questions (24-28) about the graph below 24. What would the normal boiling point be of Carbon Disulfide? 50 degrees 45 degrees 40 degrees 35 degrees 30 degrees 25 degrees 25. If the external pressure was 300 mmHg, at what temperature would Ethanol boil? 80 degrees 75 degrees 70 degrees 65 degrees 60 degrees 55 degrees 26. Which of the following liquids has the lowest viscosity? Carbon disulfide Methanol Ethanol Heptane 27. Which of the following liquids has the highest vapor pressure if kept in a closed container? Carbon disulfide Methanol Ethanol d. Heptane 28. Which of the following liquids has the lowest ΔHvap? a. Carbon disulfide b. Methanol c. Ethanol d. Heptane Answer A if the following is soluble in water and B if the following is not soluble in water 29. LiCl A 30. C4H10 B 31. NH4Cl A 32. PbCl2 B 33. NaOH A 34. CaCO3 B 35. CH3CH2OH A 36. C2H6 B 37. MgS B 38. Ca(NO3)2 A