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Question
The physical state of alkanes upto butane at ordinary temperature are in ___ state.
The physical state of alkanes upto butane at ordinary temperature are in
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Solution
The correct option is C gaseous
Lower alkanes, up to 5 carbon atoms in a chain, have a very small magnitude of Van der Waals forces because the surface area of compounds is low. Thus they exist as gases at room temperature. Hence, alkanes upto butane are found in gaseous state at ordinary temperature.
Alkanes with 6 to 18 carbon atoms in a chain exist as liquids as the magnitude of force increases with increasing surface area. Beyond 18 carbon atoms, the magnitude of force becomes very high and those alkanes exist as solids at room temperature.
gaseous
Lower alkanes, up to 5 carbon atoms in a chain, have a very small magnitude of Van der Waals forces because the surface area of compounds is low. Thus they exist as gases at room temperature. Hence, alkanes upto butane are found in gaseous state at ordinary temperature.
Alkanes with 6 to 18 carbon atoms in a chain exist as liquids as the magnitude of force increases with increasing surface area. Beyond 18 carbon atoms, the magnitude of force becomes very high and those alkanes exist as solids at room temperature.
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