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Lecture № 9 Heterofunctional carboxylic acids. Prepared by ass. Medvid I.I., ass. Burmas N.I. Outline Physical and chemical properties of oxoacids . Acetoacetic ester. Physical and chemical properties of halogenacids Physical and chemical properties of hydroxyacids .
Carboxylic Acids. Acids have a sour or tart taste Examples: Vinegar acetic acid Lemons citric acid Tart apples malic acid. Nomenclature. Drop the e and ad oic acid If two acid groups in a molecule – keep the e and say dioic acid Carb onyl C is always is number 1 carbon
Carboxylic Acids. Functional group: O -C-OH Carboxylic acids are named by taking the number of carbons and adding the suffix –anoic acid eg. pentanol pentanoic acid. Properties of COOH. Weak acids – turn litmus pink, fizz with magnesium Soluble in water (polar) Not flammable
CARBOXYLIC ACIDS . and. ESTERS. Part 5 Compounds containing the carbonyl group Carboxylic acids and esters know that carboxylic acids are weak acids, but they will liberate CO 2 from carbonates.
Carboxylic Acids. Nomenclature Properties Preparation reactions Typical reactions Spectroscopy. Nomenclature. Carboxylic acids IUPAC Common Acid derivatives IUPAC Common. RCOOH Preparation Reactions. Oxidation of Primary Alcohols Oxidation of Aldehydes
Carboxylic Acids. These are organic acids. The most common one is ethanoic acid. The functional group is C OH O. Carboxylic Acids. Naming The prefix is the same as alkanes The suffix is –anoic acid. Hydrocarbons.
Carboxylic Acids. −. Carboxyl group: -CO 2 H, -COOH. H-bond acceptor. +. −. +. H-bond donor. Intermolecular forces: dipole-dipole, H-bonding. Pure carboxylic acids form hydrogen bonded dimers very high boiling points (higher than alcohols). Carboxylic Acid Nomenclature.
Carboxylic Acids. Robert Boomer Bronte Richardson Jacob Bardwell Jeff Polasz. Structure and Functional Groups: Slides 3-5 Nomenclature: Slides 6-9 Properties/Uses: Slides 10-12 Examples: Slides 13-14 Reactions: Slides 15-20. Structure & Functional Grou p. Functional Group:
Carboxylic Acids. Unit 6. General Formula. RCOOH and ArCOOH Functional Group = O C -OH. Common Names…. 1C – Formic Acid ( Methanoic Acid) From Formaldehyde ( methanal ) 2C – Acetic Acid ( Ethanoic Acid) From Acetaldehyde ( ethanal ) 3C – Propanoic Acid ( Propanoic Acid)
Carboxylic acids. Vladimíra Kvasnicová. Properties. widely distributed in the nature (AA, FA) tart taste (vinegar, sour milk, fruits) low MW : liquids (sharp, unpleasant odor) high MW : waxlike solids hydrogen bonds high boiling points solubility in water (low MW)