Welcome to the Quiz!
This quiz contains 6 questions from a mix of 1 subtopics.
Which of the following conditions are necessary for halogens to react with alkanes?
high temperature
presence of a catalyst
high pressure
presence of ultraviolet light
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What type of reaction occurs when a halogen reacts with an alkane?
rearrangement
addition
substitution
elimination
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In the photochemical halogenation of alkanes, what is the role of ultraviolet light?
to break the carbon-hydrogen bond in the alkane
to provide the activation energy to start the reaction
to stabilise the halogenoalkane product
to prevent side reactions
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What happens during the initiation step of the free radical mechanism?
radicals react in a chain reaction
UV light produces reactive radicals
radicals join to form stable molecules
the alkane molecule is attacked by a halogen radical
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In the reaction between methane and chlorine, what is the primary product formed when there is an excess of methane?
tetrachloromethane
chloromethane
trichloromethane
dichloromethane
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To maximise the yield of a desired halogenoalkane in a free radical halogenation reaction, which of the following should be used?
excess alkane relative to the halogen
excess halogen relative to the alkane
equal amounts of alkane and halogen
a catalyst
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