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WorksheetsHALOALKANE
Total questions: 11
Worksheet time: 6mins
Haloalkane is a polar molecule that undergoes nucleophilic substitution through SN1 and SN2. Arrange the following haloalkanes in order of increasing rate of unimolecular nucleophilic substitution reaction:
I. 2-chloro-2-methylpropane
II. 2-chlorobutane
III. 1-chlorobutane
I< II < III
I< III < II
III< I < II
III< II < I
Compound C easily undergoes hydrolysis to form compound D, which forms 2-methylpropene when heated with concentrated sulphuric acid. Using the information above, proposed the structural formula for compound C
CH3CH2CH(Br)CH3
CH3CH2CH2CH(Br)CH3
CH3CH2(CH3)CH2Br
(CH3)2C(Br)CH3
Which of the following compounds is the rate of alkaline hydrolysis that is independent of the concentration of the hydroxide ion?
CH3CH2CH2CH2Cl
CH3CH(Br)CH3
C6H5CH2CH2I
(CH3)3CBr
Which of the following is a chiral molecule?
CH2BrI
CH3CBr2Cl
(CH3)2CHCl
CH3CHBrCH2CH3
Alkenes react with hydrogen halides, HX to formed haloalkane. In the reaction;
I. the pi electrons are used to form a bond with the hydrogen atom from HX
II. the intermediate product is carbocation
III. the rate of reaction increases in the order: HF, HCl, HBr, HI
I only
I and II only
II and III only
I, II and III
Which of the following species is/are nucleophile(s)?
I. OH–
II. H2O
III. R3C–
I only
I and II only
II and III only
I, II and III
A is a secondary haloalkane with formula C5H11Br and optically active. Identify A.
CH3CH2CH2CH2CH2Br
CH3CH(Br)CH2CH2CH3
(CH3)2C(Br)CH2CH3
(CH3)2C(Br)C(CH3)2CH2CH3
Name compound B below according to IUPAC nomenclature.
4-chloro-5-bromo-6-phenylhexane
2-bromo-3-chloro-1-phenylhexane
3-bromo-1-phenyl-2-bromohexane
5-bromo-4-chloro-6-phenylhexane
Which is a primary alkyl halide?
CH3CH(Br)CH3
C6H5Cl
CH3CH(CH2Br)CH3
CH3CH2C(Cl)2CH3
The number of isomers (including structural and stereoisomers) of C4H9Cl is
2
3
4
5
Arrange compound below according to decreasing boiling point;
Pentane, 2-chloropropane, 1-butanol, 2-methylbutane
2-chloropropane, 1-butanol, 2-methylbutane, Pentane
1-butanol, 2-chloropropane, Pentane, 2-methylbutane
2-chloropropane, 2-methylbutane, Pentane, 1-butanol
2-methylbutane, Pentane, 2-chloropropane, 1-butanol
