Lesson 3.3.10.2
3.3.10.2 Electrophilic substitution Quiz: AQA Chemistry, Unit 3
20 questions
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Lesson 3.3.10.2, Electrophilic substitution: 20 multiple choice questions for the AQA Chemistry (7405), Unit 3: Organic chemistry, written with Revision Ninja.
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The 20 questions
-
Which acid mixture generates the nitronium electrophile for benzene nitration?
- Nitric and hydrochloric
- Hydrochloric and sulfuric
- Nitric and sulfuric
- Sulfuric and ethanoic
-
What is the electrophile in the nitration of benzene?
- NO2- (nitrite ion)
- OH- (hydroxide ion)
- NO2+ (nitronium ion)
- H+ (proton)
-
Which electrophile is produced in Friedel-Crafts acylation using ethanoyl chloride?
- CH3+
- CH3CO+
- NO2+
- Cl+
-
Which feature makes the benzene ring attractive to electrophiles?
- High electron density
- Positive charge
- Low electron density
- High electronegativity
-
What is the major product formed from the nitration of methyl benzoate?
- Methyl 4-nitrobenzoate
- Methyl 2-nitrobenzoate
- Methyl 3-nitrobenzoate
- Methyl benzoate
-
In the mechanism of nitration of benzene, what is lost in the final step to restore the aromatic ring?
- NO2+
- Cl-
- OH-
- H+
-
What is the product of Friedel-Crafts acylation of benzene with ethanoyl chloride?
- Benzyl ethanoate
- Phenylethanoic acid
- Phenylethanone
- Phenylethanol
-
What is the product when benzene is nitrated?
- Nitrobenzene
- Benzoic acid
- Phenylamine
- Cyclohexane
-
Which class of compound is directly produced by reducing aromatic nitro compounds?
- Aromatic esters
- Aromatic amides
- Aromatic amines
- Aromatic nitriles
-
Which industrial product is partly made by nitration in the specification?
- Soap
- Explosives
- Polyethene
- Biodiesel
-
What species is formed when AlCl3 reacts with CH3COCl in Friedel-Crafts acylation?
- CH3CO2H and Cl2
- CH3C=O+ and AlCl4-
- CH3Cl and AlCl3O
- CH3COO- and AlCl3
-
What role does concentrated sulfuric acid play in the nitration of benzene?
- Electrophile
- Reducing agent
- Nucleophile
- Catalyst
-
To which ring position does the ester group in methyl benzoate direct electrophiles?
- 3-position
- Ortho position
- Para position
- 1-position
-
Which volume of hot solvent is used to dissolve a crude solid during recrystallisation?
- Minimum volume
- Equal volume
- Excess volume
- Maximum volume
-
What type of charged intermediate forms during the electrophilic substitution of benzene?
- Carbanion
- Carbocation
- Free radical
- Neutral molecule
-
Which species acts as the electrophile in the nitration of benzene?
- Nitrite ion
- Ammonium ion
- Nitronium ion
- Nitrate ion
-
Which functional group is the nitro group?
- -NO2
- -NH2
- -OH
- -CN
-
Methyl benzoate (Mr 136) of 2.00 g is nitrated to give 2.50 g of methyl 3-nitrobenzoate (Mr 181). What is the percentage yield?
- 80%
- 94%
- 100%
- 75%
-
What is the definition of an electrophile in organic reaction mechanisms?
- Electron-pair acceptor
- Electron-pair donor
- Proton donor
- Free radical donor
-
Which catalyst is used in the Friedel-Crafts acylation of benzene?
- Aluminium chloride
- Sodium hydroxide
- Concentrated sulfuric acid
- Iron(III) bromide
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