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Carboxylic Acids

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.

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Carboxylic Acids

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  1. Carboxylic Acids • These are organic acids. • The most common one is ethanoic acid. • The functional group is C OH O

  2. Carboxylic Acids • Naming • The prefix is the same as alkanes • The suffix is –anoic acid

  3. Hydrocarbons H H H C C C OH H H O • There are 3 carbons –Prop • Contains COOH –anoic acid • Name isPropanoic acid

  4. Carboxylic Acid • Carboxylic acids have acid properties. • They have a pH less than 7. • They are weak acids. • They react with metals to produce H2 and a salt. • They react with carbonates to produce CO2 , H2O, and a salt.

  5. Carboxylic Acids • When carboxylic acids react they produce a negative ion. • Called –anoate ion • Eg ethanoic acid produces ethanoate ion • CH3COOH → CH3COO-

  6. Carboxylic Acids • Ethanoic acid + magnesium magnesium ethanoate + hydrogen CH3COOH + Mg → (CH3COOH)2Mg + H2

  7. Carboxylic acids • Carboxylic acids dissolve in water because they are polar compounds. • The –OH group at the end of the molecule makes the molecule polar. • If the carbon chain is too long then the acid loses its polar properties.

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