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  1. Problems
  2. /Organic Compounds with Functional Groups
  3. /Haloalkanes and Haloarenes

Haloalkanes and Haloarenes

Chemistry
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More in Organic Compounds with Functional GroupsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomolecules
30 problems
Exam:
Type:
1.
A leak lets 1.00 kg of freon-12, CCl₂F₂ (molar mass 121.0 g/mol), reach the stratosphere… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
2.
DDT is made from chlorobenzene and trichloroethanal (chloral) in the presence of concentrated… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
3.
Freon-12 is made by the Swarts reaction: CCl₄ + 2 HF → CCl₂F₂ + 2 HCl, with antimony trifluoride as… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
4.
The percentage of halogen by mass tells us how much of a compound is made of halogen… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Easy
5.
A Grignard reagent, methylmagnesium iodide, reacts with a compound that contains an O-H bond and… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
6.
Daniel mixes 0.200 mol of bromobenzene and 0.200 mol of 1-bromobutane in dry ether and adds excess… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
7.
Chlorobenzene, 11.25 g (molar mass 112.5 g/mol), is nitrated with a mixture of concentrated nitric… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
8.
A sample of 0.294 g of an aromatic compound has a molar mass of 147 g/mol… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
9.
Benzene has six hydrogen atoms, and any of them can be replaced by chlorine… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
10.
Aniline, 9.30 g, is dissolved in hydrochloric acid and cooled to 275 K… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Easy
11.
For a secondary bromide in ethanol, elimination has a higher activation enthalpy than substitution… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
12.
Ethyne is prepared in a flask by heating 9.40 g of 1,2-dibromoethane with an excess of alcoholic… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
13.
Two haloalkanes are heated with alcoholic potassium hydroxide: 2-bromo-3-methylpentane… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
14.
2-Bromo-3-methylbutane is heated in water, with no added base… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
15.
A secondary haloalkane is hydrolysed in a solution of sodium hydroxide, and it reacts by SN1 and… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
16.
An optically pure chiral tertiary halide reacts with water by SN1… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
17.
A tertiary bromide is dissolved in aqueous ethanol… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
18.
Sodium ethoxide is made by dissolving 2.30 g of sodium in an excess of dry ethanol… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
19.
Textbooks quote typical relative SN2 rates of 30 for a methyl bromide, 1 for a primary bromide and… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
20.
A primary alkyl bromide reacts with an iodide ion in acetone by the SN2 mechanism… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Easy
21.
Bond enthalpies in kJ/mol: C-H in methane 439; Br₂ 193, H-Br 366, CH₃-Br 293; I₂ 151, H-I 299… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
22.
A student warms 9.25 g of 1-chlorobutane with 22.5 g of sodium iodide in dry acetone… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
23.
2-Methylbutane, CH₃CH(CH₃)CH₂CH₃, gives four monohalo products… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
24.
A sample of 4.20 g of propene is treated with excess hydrogen bromide gas in the absence of a… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Medium
25.
Meera prepares 1-bromobutane by warming butan-1-ol with sodium bromide and concentrated sulphuric… New
High School (11–12) · Haloalkanes and HaloarenesStemPy LabStemPy Lab
Hard
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