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Chemistry A2 > Carboxylic Acid Reactions > Flashcards

Carboxylic Acid Reactions Flashcards

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1
Q

Primary Alcohols -> Carboxylic Acids

A

Type: Oxidation
Conditions: Reflux
Reagent: Potassium Dichromate + Concentrated Sulfuric Acid

CH3CH2OH + 2[O] -> CH3COOH + H2O

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2
Q

Ethylbenzene -> Carboxylic Acids

A

Conditions:Heated and Alkaline
Reagents: Alkaline Potassium Manganate (VII) + HCl

1) C6H5CH2CH3 + Alkaline KMnO4 -> C6H5COONa
2) C6H5COONa + HCl -> C6H5COOH

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3
Q

Carboxylic Acid -> Carboxylate (Alkali)

A

Type: Neutralisation
Reagent: Aqueous NaOH

NaOH + CH3COOH -> CH3COONa + H2O

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4
Q

Carboxylic Acid -> Carboxylate (Carbonate)

A

Reagent: CaCO3

2CH3COOH + CaCO3 -> (CH3COO)2Ca+ CO2 + H2O
Note: Used as a Carboxyl Group test due to the release of CO2

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5
Q

Carboxylic Acid -> Carboxylate (Reactive metals)

A

Reagent: Mg

2CH3COOH + Mg -> (CH3COO)2Mg + H2

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6
Q

Carboxylic Acid -> Primary Alcohol

A

Type: Reduction
Reagent: Lithium Aluminium Hydride in dry ether

RCOOH + 4[H] -> RCH2OH + H2O
NaBH4 can’t be used as a reducing agent in this reaction because it’s not reactive enough

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7
Q

Carboxylic Acid -> Ester

A

Type: Esterification
Conditions: Reflux
Reagent: Carboxylic Acid
Catalyst: Concentrated H2SO4 (Few drops)

CH3COOH + CH3OH ->CH3COOCH3 + H2O

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8
Q

Ester -> Carboxylic Acid

A

Type: Hydrolysis/Reverse Esterification
Conditions:
-Acidic H+/H20
-Reflux

CH3COOCH3 + H2O -> CH3COOH + CH3OH

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9
Q

Ester -> Carboxylate

A

Conditions:

  • Alkaline OH-/H20
  • Reflux

CH3COOCH3 -> CH3COO- +CH3OH

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10
Q

Carboxylic Acid -> Acid Chloride

A

Reagents: Phosphorus Pentachloride

CH3COOH + PCl5 -> CH3COCL + POCL3 + HCl

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11
Q

Acid Chloride -> Carboxylic Acid

A

Type: Hydrolysis
Reagents: H2O

CH3COCl + H20 -> CH3COOH + HCl

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12
Q

Carboxylic Acid -> Alkane

A

Type: Decarboxylation
Reagents: Sodalime (Represented by NaOH) - Prepared by heating Sodium Hydroxide and Calcium Oxide

CH3CH2COOH + 2NaOH -> C2H6 +Na2CO3

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13
Q

Sodium Benzenecarboxylate -> Benzene

A

Type: Decarboxylation
Reagents: Sodalime (Represented by NaOH) - Prepared by heating Sodium Hydroxide and Calcium Oxide

C6H5COO-Na+ + NaOH -> C6H6 + Na2CO3

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14
Q

Carboxylic Acid -> Amide

A

Conditions: Reflux
Reagent: Ammonium Carbonate + Carboxylic Acid in excess

(NH4)2CO3 + RCOOH -> RCOONH4 + CO2 + H2O
RCOONH4 -> RCONH2+H2O

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Chemistry A2 (10 decks)

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