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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?

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If the critical temperature of a gas is more the intermolecular forces are strong and can be converted easily into liquid.
Since the critical temperature of `CO_2(31.1^@C)`, the intermolecular forces in `CO_2` are stronger.
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