Question 1
Which pair of compounds can both be separately hydrolysed in acidic conditions to form propanoic acid?
propyl methanoate and ethanenitrile
propyl methanoate and propanenitrile
methyl propanoate and ethanenitrile
methyl propanoate and propanenitrile
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Question 2
Which set of reagents is not suitable for the step indicated?
step 1: HCN and KCN
step 2: hot ethanolic KOH
step 3: warm aqueous H2SO4
step 4: CH3OH with an acid catalyst
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Question 3
Which reaction may be used to make a carboxylic acid in a single step?
hydrolysis of an ester with hydrochloric acid
hydrolysis of an ester with sodium hydroxide
reaction of steam and phosphoric acid with an alkene
reaction of an acyl chloride with ammonia
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Question 4
Energy is released in the human body by the oxidation of glucose in a complex sequence of reactions. Part of this sequence is the Krebs cycle.
One reaction in the Krebs cycle is the conversion of fumaric acid into malic acid.
HO2CCH=CHCO2H ➔ HO2CCH(OH)CH2CO2H
fumaric acid malic acid
Which reagents could achieve this transformation in the laboratory?
acidified KMnO4
Br2(aq) followed by hot NaOH(aq)
H2O with Pt catalyst
steam with H2SO4
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Question 5
The compound ‘leaf alcohol’ is partly responsible for the smell of new-mown grass.
CH3CH2CH=CHCH2CH2OH
leaf alcohol
What will be formed when ‘leaf alcohol’ is oxidised using an excess of hot, acidified K2Cr2O7(aq)?
CH3CH2CH(OH)CH(OH)CH2COOH
CH3CH2COCOCH2COOH
CH3CH2CH=CHCH2COOH
CH3CH2COOH and HOOCCH2COOH
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Question 6
Which pair of reagents will take part in a redox reaction?
CH3CHCH2 + Br2
CH3CH2CH2OH + concentrated H3PO4
CH3COCH3 + HCN
HCOOC2H5 + dilute H2SO4
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Question 7
Which reaction would not give ethanoic acid?
heating ethanenitrile under reflux with dilute sodium hydroxide
heating ethanenitrile under reflux with dilute sulfuric acid
heating ethanal under reflux with acidified sodium dichromate(VI)
heating ethanol under reflux with acidified sodium dichromate(VI)
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Question 8
Which compound could be formed by a one-step reaction from 1-chloropropane?
CH3CHOHCH3
CH3CHNHCH3
CH3CH2CH2OH
(CH3)2CHNH2
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Question 9
Which statement about the reactions of methanol is correct?
it cannot be oxidised to methanal
it reacts with acid anhydrides to form methyl esters
it reacts with ethanoic acid to form HCOOC2H5
it undergoes dehydration to an alkene
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Question 10
Which statement about the purification of a solid by recrystallisation is correct?
insoluble impurities are removed in the last stage of the process
soluble impurities remain in solution when the crystals are filtered off
the production of the purified solid can be speeded up by evaporating all the solvent
the solid must be soluble in the solvent used at all temperatures
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Question 11
Which substance cannot be made in a single step from C2H4?
C2H5OH
C2H5Br
C2H6
C2H5NH2
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Question 12
Which of these reagent(s) will not react with HOCH2CH2CH2COOH?
NaCN in ethanol
C2H5OH in the presence of an acid catalyst
(CH3CO)2O
concentrated H2SO4
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Question 13
Which one of the following reacts with ethanoic acid and with phenol?
aqueous potassium hydroxide
bromine
calcium carbonate
methanol and an acid catalyst
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Question 14
Which compound does not react with nucleophiles?
CH3CH2CHO
CH3CHCH2
CH3CH2COCH3
CH3CH2CH2Cl
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Question 15
Which is the mechanism for this conversion?
addition-elimination
electrophilic substitution
free-radical substitution
nucleophilic substitution
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