CARBOXYLIC ACID

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Chemical Properties Of Carboxylic acids
VIDEO 1
2

• 1) Neutralization with a base
• Carboxylic acids are acidic.
• -It can react with base such as NaOH to give
  metal carboxylate salts, RCO2- M .

VIDEO 2
3
General chemical equation
Example
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2) Reaction with electropositive metals such
as Na, Mg or Ca .
Reactive metals react with carboxylic acid to
form hydrogen gas and salts of carboxylic acids.
Example
CH3COOH Na ? CH3COONa
1/2H2(g) ethanoic acid magnesium
ethanoate
VIDEO 3
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3) Reduction with LiAlH4/H - Carboxylic acids
are reduced to primary alcohols by reaction with
litium aluminium hydride, LiAlH4/H.
General chemical equation
/ H
VIDEO 4
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Example
/ H
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Methanoic acid, HCOOH as a reducing agent
- Methanoic acid molecule, has
both
and
carbonyl
carboxylic
VIDEO 5
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-Methanoic acid acts as a reducing agent because
it contains an aldehyde group.
O ll H-C-OH
- It shows the properties of both carboxylic acid
and aldehyde.
- It also shows reducing properties in reactions
with acidified KMnO4 or K2Cr2O7 and Tollens
reagent.
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• With Tollens reagent and silver nitrate solution.

• Methanoic acid gives a positive test with
  Tollens reagent.
• - It gives a silver mirror when warmed with
  Tollens reagent (a solution of silver nitrate
  and ammonia).

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KMnO4 / H
CO2 H2O MnO2
(Brown)
Ag(NH3)2
Ag? CO2 H2O