Lesson 18B.1
18B.1 Amines: identification, basicity and reactions Quiz: Pearson Edexcel Chemistry, Unit 18
20 questions
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Lesson 18B.1, Amines: identification, basicity and reactions: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 18: Organic Chemistry III, written with Revision Ninja.
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The 20 questions
-
How many alkyl or aryl groups are attached to nitrogen in a primary amine?
- One
- Three
- Four
- Two
-
What feature on nitrogen allows primary aliphatic amines to act as bases?
- Pi cloud
- Lone pair
- Double bond
- Positive charge
-
Which ion is released when butylamine reacts with water to form an alkaline solution?
- Hydronium ion
- Ammonium ion
- Hydroxide ion
- Chloride ion
-
Which metal ion reacts with primary amines to form a deep blue complex?
- Copper(II)
- Iron(III)
- Nickel(II)
- Cobalt(II)
-
Which group is directly attached to the carbonyl carbon in an amide?
- Hydrogen atom
- Nitrogen atom
- Oxygen atom
- Chlorine atom
-
Which two functional groups are present in all amino acids?
- Amide and carboxyl
- Amine and carbonyl
- Amine and hydroxyl
- Amine and carboxyl
-
What organic product is formed from the reaction of butylamine with ethanoyl chloride?
- Butanamide
- N-ethylethylamide
- Butyl ethanoate
- N-butylethanamide
-
Which compound is the strongest base among ammonia, butylamine, and phenylamine?
- Butylamine
- All are equal
- Phenylamine
- Ammonia
-
Why is phenylamine a weaker base than ammonia in aqueous solution?
- Lone pair delocalisation
- Steric hindrance
- Inductive donation
- Greater molar mass
-
What is the main drawback of preparing a primary amine from a haloalkane and ammonia?
- Further substitution occurs
- Low reaction rate
- Hydrolysis occurs
- Reversible reaction
-
Which reagent reduces a nitrile to a primary amine?
- LiAlH4 in ether
- Acidified K2Cr2O7
- Concentrated H2SO4
- NaBH4 in water
-
What is the molecular formula of N-butylethanamide?
- C6H15N
- C6H11O
- C4H11N
- C6H13NO
-
Which of these is a secondary amine?
- Trimethylamine, (CH3)3N
- Ethanamide, CH3CONH2
- Propan-1-amine, CH3CH2CH2NH2
- N-methylethanamine, CH3NHCH2CH3
-
Which compound is a primary aromatic amine?
- Diethylamine, (C2H5)2NH
- Trimethylamine, (CH3)3N
- N-methylphenylamine, C6H5NHCH3
- Phenylamine, C6H5NH2
-
Which ion is produced when ammonia acts as a base in water?
- Hydronium ion
- Hydrogen ion
- Nitride ion
- Hydroxide ion
-
Which effect explains why alkylamines are stronger bases than ammonia?
- Positive inductive effect
- Negative inductive effect
- Mesomeric effect
- Steric hindrance
-
Which of these compounds is the strongest base?
- Phenylamine
- Ethanoic acid
- Ammonia
- Butylamine
-
What is the role of excess amine when reacting with an acyl chloride?
- Oxidise the amine
- Neutralise released HCl
- Reduce carbonyl group
- Act as catalyst
-
Which condition minimises further substitution when preparing a primary amine from a halogenoalkane?
- Excess ethanolic ammonia
- Concentrated sulphuric acid
- Excess halogenoalkane
- Dilute aqueous ammonia
-
What type of reaction mechanism forms an amide from an acyl chloride and an amine?
- Nucleophilic addition-elimination
- Free radical substitution
- Nucleophilic substitution
- Electrophilic addition
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