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Carboxylic acids and esters

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Total cards: 17•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (17)

#1
Front (Question)

State the reactants to produce an ester from a carboxylic acid

Back (Answer)

Carboxylic acid Alcohol Concentrated acid e.g. H2SO4, H3PO4

#2
Front (Question)

State the products of the elimination reaction to produce an ester

Back (Answer)

Ester Water

#3
Front (Question)

Give the products and reversibility of hydrolysis of an ester in acidic conditions

Back (Answer)

Carboxylic acid Alcohol Reversible reaction

#4
Front (Question)

Give the products and reversibility of hydrolysis of an ester in alkaline conditions

Back (Answer)

Sodium carboxylate salt Alcohol Non-reversible

#5
Front (Question)

Give the formula of glycerol

Back (Answer)

CH2OHCHOHCH2OH Propane-1,2,3-triol

#6
Front (Question)

What determines whether a fat is solid or liquid at RTP?

Back (Answer)

Strength of Van der Waal’s forces; liquid if unsaturated, solid if saturated

#7
Front (Question)

Give the equation for the hydrolysis of fat in alkaline conditions

Back (Answer)

RCOO-CH2 RCOO-CH3 RCOO-CH2 + 3(K)OH -> 3RCOO(K) + CH3OH CH2OH CH3OH

#8
Front (Question)

What alcohol is used to produce biodiesel?

Back (Answer)

Methanol

#9
Front (Question)

Describe an acid anhydride

Back (Answer)

RCOOCOR Central O with RC=O on each side Symmetrical

#10
Front (Question)

Describe the mechanism for addition elimination of acyl chlorides

Back (Answer)

Lone pair of nucleophile attacks δ+ C on C-Cl, arrow from C=O to O, gives O negative charge Arrow from O- to O-C, arrow from C-Cl to Cl, arrow from H-Q+ to Q+ (Q nucleophile)

#11
Front (Question)

Describe the mechanism for addition elimination of acid anhydrides

Back (Answer)

Lone pair of nucleophile attacks δ+ C on C=O, arrow from C=O to O, gives O negative charge Arrow from O- to O-C, arrow from ester linkage to O of ester link, arrow from H-Q+ to Q+ (Q nucleophile)

#12
Front (Question)

Give the name for the production of an ester from a carboxylic acid and alcohol

Back (Answer)

Esterification

#13
Front (Question)

Give uses of esters

Back (Answer)

Perfumes Food flavouring Plasticisers Solvents

#14
Front (Question)

Describe how biodiesel is made

Back (Answer)

Reacting carboxylic acids with methanol in the presence of an (sulfuric) acid catalyst

#15
Front (Question)

Give the products of the hydrolysis of esters

Back (Answer)

Soap Glycerol

#16
Front (Question)

Why is ethanoic anhydride used instead of ethanoyl chloride in esterification?

Back (Answer)

Ethanoyl chloride produces HCl when it reacts with water, which burns skin More stable Cheaper Safer

#17
Front (Question)

Name the type of compound shown by the formula RCOOK

Back (Answer)

Carboxylate salt