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Topic: Functional Grp # 2: Alcohol

Topic: Functional Grp # 2: Alcohol. Do Now: Identify the bases out of the following CH 3 OH NaOH C 2 H 5 OH KOH Mg(OH) 2. OH. Alcohols. OH group replaces H in hydrocarbon OH group called: hydroxyl group. CH 4. CH 3 OH. General Formula Alcohols: R  OH

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Topic: Functional Grp # 2: Alcohol

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  1. Topic: Functional Grp # 2: Alcohol Do Now: Identify the bases out of the following CH3OH NaOH C2H5OH KOH Mg(OH)2

  2. OH Alcohols • OH group replaces H in hydrocarbon • OH group called: hydroxyl group CH4 CH3OH

  3. General Formula Alcohols: ROH • R represents entire hydrocarbon part of molecule • OH is hydroxyl group

  4. Properties of Alcohols • Contain: H bonded to O atom • Hydrogen Bonding = stronger IMF • Alcohols: higher bp than corresponding alkane • The bigger the molecule the higher the • ‘Like dissolves Like’ • Alcohols tend to be very soluble in water • Non-electrolytes vs

  5. Correct response = D Which compound has the highest boiling point? • CH4 • C2H6 • C3H8 • C3H7OH

  6. Naming AlcohOLs • Based on alkane name • Name parent chain • drop –e ending & add –ol • If parent chain has 3 or more C’s, # which C OH group(s) attached to • OH should be on lowest numbered Carbon

  7. Note: Never more than one OH group per C Naming 1-Butanol 2-Butanol

  8. More than 1 hydroxyl group • Prefixes di-, tri-, tetra- • used before -olending • tell # of hydroxyl groups 1,3 butanediol 2,3 butanediol

  9. Classifying Alcohols • Monohydroxy: 1 hydroxyl group • Dihydroxy: 2 OH groups • Trihydroxy: 3 OH groups

  10. MonohydroxyAlcohols are referred to as Primary, Secondary,Or Tertiary H H H Alcohol - OH is attached to end Carbon Alcohol - OH is attached C with 2 C attached Alcohol - OH is attached C with 3 C attached

  11. Monohydoxyl Alcohols – Primary, Secondary or Tertiary?

  12. HOW ABOUT THIS ONE? PRIMARY, SECONDARY OR TERTIARY? How would you name it?

  13. Name the following

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