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Critical temperature for carbon dioxide ...

Critical temperature for carbon dioxide and methane are `31.1 ""^(@)C` and `-81.9 ""^(@)C` respectively. Which of these has stronger intermolecular forces and why ?

Text Solution

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Intermolecular forces is more strong in carbon dioxide.
Critical temperature of carbon dioxide is `31.1 ""^(@)C`. Which is more than methane liquification of carbon dioxide occurs easily at high temperature.
Intermolecular attraction forces are strong in methane and less strong (weak) than `CO_(2)`.
Molecular mass of `CO_(2)` is 44 gm/mol. and methane is 16 gm/mol. So attraction force of Van der waal are more in `CO_(2)` than `CH_(4)`.
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