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The difference between the critical temperature of carbon dioxide (CO2, 304K) andmethane (CH4, 190K) can best be explained by the difference between which kind oftheir interactions?a. Keesomb. Debyec. Londond. All of the above

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The difference between the critical temperature of carbon dioxide (CO2, 304K) andmethane (CH4, 190K) can best be explained by the difference between which kind oftheir interactions?a. Keesomb. Debyec. Londond. All of the above

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Solution

The difference in the critical temperatures of carbon dioxide (CO2, 304K) and methane (CH4, 190K) can be best explained by the difference in their London dispersion forces.

London dispersion forces are the weakest intermolecular forces and are present in all molecules, whether polar or nonpolar. They arise due to the instantaneous polarization of the electron cloud of a molecule which induces a dipole in a neighboring molecule.

In the case of CO2 and CH4, both are nonpolar molecules. However, CO2 has a larger molar mass and more electrons than CH4, leading to a larger electron cloud that can be polarized. This results in stronger London dispersion forces in CO2 compared to CH4.

Stronger intermolecular forces require more energy to overcome, leading to a higher critical temperature. Therefore, the difference in the critical temperatures of CO2 and CH4 can be attributed to the difference in their London dispersion forces.

So, the answer is c. London.

This problem has been solved

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