Lesson 6.1.3
6.1.3 Carboxylic acids and esters Quiz: OCR Chemistry, Unit 5
20 questions
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Lesson 6.1.3, Carboxylic acids and esters: 20 multiple choice questions for the OCR Chemistry (H432), Unit 5: Organic chemistry and analysis, written with Revision Ninja.
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The 20 questions
-
Which type of intermolecular force explains why short-chain carboxylic acids dissolve in water?
- Hydrogen bonding
- Ionic bonding
- Permanent dipole-dipole
- London dispersion forces
-
What gas is produced when ethanoic acid reacts with aqueous sodium carbonate?
- Carbon monoxide
- Hydrogen
- Carbon dioxide
- Oxygen
-
Which catalyst is used in the esterification of a carboxylic acid with an alcohol?
- Concentrated sodium hydroxide
- Nickel catalyst
- Dilute hydrochloric acid
- Concentrated sulfuric acid
-
What class of organic compound is formed alongside an alcohol during ester acid hydrolysis?
- Acid anhydride
- Carboxylic acid
- Acyl chloride
- Carboxylate salt
-
What organic product is directly formed during the alkaline hydrolysis of an ester?
- Carboxylate salt
- Acid anhydride
- Carboxylic acid
- Acyl chloride
-
Which reagent is used to convert a carboxylic acid directly into an acyl chloride?
- SOCl2
- NaCl
- HCl
- Cl2
-
What is the organic product when an acyl chloride reacts with a primary amine?
- An ester
- An amide
- An alkene
- A carboxylic acid
-
What is the ester formed from ethanoic acid and ethanol?
- Ethyl ethanoate
- Ethyl methanoate
- Propyl ethanoate
- Methyl ethanoate
-
Which sodium salt is formed when methyl propanoate is heated with aqueous sodium hydroxide?
- Sodium ethanoate
- Sodium propanoate
- Sodium butanoate
- Sodium methanoate
-
What organic product is formed when ethanoyl chloride reacts with ethanol?
- Ethyl ethanoate
- Diethyl ether
- Ethanoic acid
- Chloroethane
-
What is the molecular formula of ethyl propanoate?
- C4H8O2
- C6H12O2
- C5H10O2
- C5H12O2
-
Which compound reacts with aqueous sodium carbonate to produce carbon dioxide gas?
- Ethanoic acid
- Ethyl ethanoate
- Phenylamine
- Phenol
-
Which intermolecular force is absent between pure ester molecules, explaining their high volatility?
- Hydrogen bonding
- Permanent dipole-dipole
- London dispersion forces
- Covalent bonding
-
What gas is evolved as steaming white fumes when ethanoyl chloride reacts with water?
- Chlorine
- Ammonia
- Carbon dioxide
- Hydrogen chloride
-
Which action increases the yield of ester during the reversible acid-catalysed esterification reaction?
- Adding sodium hydroxide
- Removing water continuously
- Adding excess water
- Decreasing temperature
-
Which reactive compound is used instead of a carboxylic acid to esterify phenol efficiently?
- Alcohol
- Haloalkane
- Acyl chloride
- Aldehyde
-
What organic products form when ethanoic anhydride reacts with ethanol?
- Ethanol, ethanoic acid
- Ethyl ethanoate, ethanoic acid
- Diethyl ether, water
- Ethyl ethanoate, water
-
What type of reaction is the hydrolysis of an ester using hot aqueous acid?
- Reversible reaction
- Addition reaction
- Irreversible reaction
- Electrophilic reaction
-
Which catalyst is used in the esterification of ethanoic acid with ethanol?
- Dilute sodium hydroxide
- Concentrated sulfuric acid
- Concentrated hydrochloric acid
- Hydrated copper sulfate
-
What is the systematic name of the ester formed from propan-1-ol and ethanoic acid?
- Ethyl propanoate
- Propan-1-yl propanoate
- Propyl methanoate
- Propyl ethanoate
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