WorksheetsAQA A Level Chemistry Alkenes
Total questions: 12
Worksheet time: 24mins
What is the IUPAC name of the major product of the reaction between 2-ethylbut-1-ene and hydrogen bromide?
1-bromo-2-ethylbutane
2-bromo-2-ethylbutane
2-bromo-2-methylpentane
3-bromo-3-methylpentane
In which reaction does the inorganic reagent act initially as an electrophile?
bromoethane with ethanolic potassium hydroxide
chloroethane with aqueous sodium hydroxide
ethane with chlorine
ethene with concentrated sulfuric acid
What is the minimum volume of 0.0500 mol dm–3 aqueous bromine needed to react completely with 0.0200 g of buta-1,3-diene?
(Mr of buta-1,3-diene = 54.0)
7.40 cm3
14.8 cm3
29.6 cm3
67.5 cm3
Which has E-Z isomers?
C2H2Br2
C2H3Br
C2H4Br2
C2H5Br
Which compound reacts with hydrogen bromide to give 2-bromo-3-methylbutane as the major product?
(CH3)2C=CHCH3
CH3(CH2)2CH=CH2
CH3CH2C(CH3)=CH2
(CH3)2CHCH=CH2
Which statement is not correct about CH2═C(CH3)CH2Br?
It displays E-Z isomerism.
It forms an addition polymer.
It reacts with electrophiles.
It decolourises bromine water.
Which polymer has hydrogen bonding between its chains?
Kevlar
Polythene
PVC
Terylene
Which alkene reacts with hydrogen bromide to give 2-bromo-3-methylbutane as the major product?
(CH3)2C=CHCH3
CH3CH2CH=CHCH3
CH3CH2C(CH3)=CH2
(CH3)2CHCH=CH2
Which statement is correct about poly(chloroethene)?
It has the empirical formula CHCl
It decolourises bromine water.
Its brittleness is reduced by plasticisers.
Its polymer chain contains alternate single and double bonds.
Consider the reaction between propene and hydrogen bromide to form the major product.
Which species is formed in the mechanism of this reaction?
CH3–C+H–CH2Br
CH3–CHBr–C+H2
CH3–C+H–CH3
CH3–CH2–C+H2
Which statement about E-1,2-dichloroethene is correct?
It has the same boiling point as Z-1,2-dichloroethene.
It forms a polymer with the same repeating unitas Z-1,2-dichloroethene.
It has the same IR spectrum as Z-1,2-dichloroethenein the range 400–1500 cm−1.
It has a molecular ion peak different from that ofZ-1,2-dichloroethene in its mass spectrum.
What is the major product of the reaction between but-1-ene and DBr?(D is deuterium and represents 2H)
CH2DCH2CH2CH2Br
CH2DCH2CHBrCH3
CH3CH2CHBrCH2D
CH3CH2CHDCH2Br
