Alkanes
This is a multiple-choice quiz about Alkanes.
1. Which of the following describes alkanes as saturated hydrocarbons?
Containing single C-C and C-H bonds
Having high bond enthalpy
Being tetrahedral in shape around each carbon atom
Reacting with chlorine and bromine by radical substition
2. What explains the variations in boiling points of alkanes with different carbon chain length and branching?
Induced dipole–dipole interactons
Hybridisation not required
Complete combustion of alkanes, as used in fuels
High bond enthalpy
3. What is the reactivity of alkanes with many reagents explained by?
The tetrahedral shape and bond angle around each carbon atom in alkanes
The formation of a mixture of organic products through radical substitution
Low polarity of the σ-bonds present
Use of model orbital overlap to explain covalent bonding
4. In what process is ultraviolet radiation used for reacting alkanes with chlorine and bromine?
Radical substitution using infrared radiation
Homolytic fission using ultraviolet radiation
Complete combustion as used in fuels.
Incomplete combustion in a limited supply of oxygen
5. What explains the limitations of radical substitution when synthesizing organic compounds?
The formation of a mixture of organic products through further substitution and reactions at different positions in a carbon chain.
High bond enthalpy.
Induced dipole–dipole interactons.
Hybridisation not required.
6. How can equations show which species are radicals during the reaction between alkane and halogens?
Using 'half curly arrows' to represent unpaired electrons.
Using double quatation marks.
Using single ‘dot’, •, to represent the unpaired electron.
Using plus signs to represent electrons.
7. What is required to explain covalent bonding between two atoms using model orbital overlap?
Hybridisaton not required.
Complete combustion as used in fuels.
Reactions between alkanes with many reagents.
Induced dipole–dipole interactons
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