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• 1 media/lec 10 key image.png 2020-03-01T15:00:08-08:00 Lecture 10: Intermolecular Forces and Intro to Reactivity 7 image_header 2020-03-01T16:49:40-08:00 Objectives and Skills
  
  KEY INFORMATION SUMMARY
  
  PROBLEMS
  
  Problem 10.1: Intermolecular Forces
  1. Describe the intermolecular forces, in decreasing significance. SOLUTION
     1. H₂CO
     2. CH₃CH₂OH
     3. CH₃CON(CH₃)₂
     4. CH₃C≡CH
  2. Predict which compound, for each set, would have the strongest intermolecular forces. SOLUTION
     1. CH₃CH₂CH₂CH₃, (CH₃)₂CHCH₃, (CH₃)₄C
     2. CH₃CH₂CH₂OH, (CH₃)₂COHCH₃, (CH₃)₃COH
  If you made some mistakes or want to practice more, review the concepts that gave you trouble and work on this extra problem. If you're good, move to the next problem ;)
  
  Problem 10.2: Physical Properties
  1. Predict which compound, for each set, will have the highest boiling point. SOLUTION
     1. CH₃CH₂CH₃, CH₃CH₂CH₂OH, CH₃OCH₂CH₃
     2. CH₃CH₂CH₂CH₂OH, (CH₃) ₂CHCH₂OH, (CH₃) ₃COH
     3. CH₃CH₃, CH₃CF₃, CF₃CF₃
     4. HN(CH₃) ₂, H₂N(CH₃), H₃N
  2. Why does salt (NaCl) dissolve in water? SOLUTION
  3. Why does salt (NaCl) NOT dissolve in hexane? SOLUTION
  If you made some mistakes or want to practice more, review the concepts that gave you trouble and work on this extra problem. If you're good, move to the problem below ;)
  
  Problem 10.3: Acids-Bases
  1. Identify the conjugate acid and conjugate base in each of the following pairs of compounds. Draw the Lewis structures of each species and add necessary formal charges. SOLUTION
     1. [(CH₃)₂CHO]^- and (CH₃)₂CHOH
     2. HNO₃ and [NO₃]^-
     3. [NH₂]^- and NH₃
  2. Identify each of the following as Lewis acid or Lewis base: [(CH₃)₃C]⁺, BH₃, [CH₃]^-, and [HO]^-. SOLUTION
  3. Rank the following from least acidic to most acidic. SOLUTION
  If you made some mistakes or want to practice more, review the concepts that gave you trouble and work on this extra problem. If you're good, move to the problem below ;)
  
  Problem 10.4: Mechanisms
  1. Add the curved arrows to complete each transformation below. SOLUTION
  2. Find the error in each mechanism below. Propose a corrected mechanism. SOLUTION
  If you made some mistakes or want to practice more, review the concepts that gave you trouble and work on this extra problem. If you're good, move to the next lecture ;)
• 1 2020-03-01T15:22:27-08:00 EXTRA Problem 10.2: Physical Properties 2 plain 2020-03-01T15:38:18-08:00
  1. Predict which compound, for each set, will have the highest water solubility. SOLUTION
     1. CH₃CH₂Cl or CH₃CH₂OH
     2. CH₃CH₂CH₂OH or CH₃CH₂CH₂SH
     3. HOCH₂CH₂ CH₂OH or CH₃ CH₂CH₂OH
     4. CH₃CH₂COOH or CH₃CH₂CONH₂
  2. Why does hexane dissolve in acetone? SOLUTION
  3. Why does hexane NOT dissolve in water? SOLUTION