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Topic: Function Group #6: Carboxlyic Acids (Organic Acids)

Topic: Function Group #6: Carboxlyic Acids (Organic Acids). Do Now: Define an Arrhenius Acid. Acidic H +. General Formula: Contains: carbonyl group AND hydroxyl group bonded to same C H is acidic; so ionizes in water! Carboxylic Acids are electrolytes!. alcohol. aldehyde. ketone.

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Topic: Function Group #6: Carboxlyic Acids (Organic Acids)

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  1. Topic: Function Group #6: CarboxlyicAcids (Organic Acids) Do Now: Define an Arrhenius Acid

  2. Acidic H+ General Formula:Contains: carbonyl groupAND hydroxyl groupbonded to same CH is acidic; so ionizes in water! Carboxylic Acids are electrolytes!

  3. alcohol aldehyde ketone Which of the following is an electrolyte? • CH3OH • CH3COOH • CH2O • C3H6O Correct answer is B, the carboxylic acid

  4. Correct answer is D, an alcohol Which of the following is a nonelectrolyte? • HCl • CH3COOH • NaOH • CH3OH

  5. Properties of Carboxylic Acids • H bonded to O therefore hydrogen bonds • Leads to ↑ BP over corresponding alkane • pretty soluble in water

  6. Naming Carboxylic Acids • Never needs number: • functional group always at end • Find name corresponding hydrocarbon • Drop -e & add -oic + acid

  7. O 1 C  methane Methanoic acid Sting in red ants, bees H HCCOH H = Ethanoic Acid Acetic acid 2 C  ethane = HCOH O

  8. CH3CH2CH2CH2COOH 5 C’s  pentane so the name is pentanoic acid

  9. Common carboxylic acids • Acetic acid – vinegar • produced in doughs leavened with specific yeast (ex: sourdough bread) • Citric acid • Tannic acid • Ascorbic acid • Lactic acid • Poly(lactic acid) – biodegradable polymers used as sutures in internal surgery

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