?Which of the following best explains why the two values in Parts A and B are di

Question

?Which of the following best explains why the two values in Parts A and B are different? The perceived forces between chlorine gas molecules that contribute to nonideal behavior are most strongly influenced by

Which of the following best explains why the two values in Parts A and B are different? The perceived forces between chlorine gas molecules that contribute to nonideal behavior are most strongly influenced by o the high system pressure and relatively large chlorine molecule size. the high system temperature and relatively large chlorine molecule size. the polar chlorine molecules and the low system temperature. the high system pressure and high system temperature. Submit My Answers Give Up Incorrect; Try Again; 5 attempts remaining Chlorine molecules are not po feature of chlorine molecules causes their behavior to be nonideal?

Explanation / Answer

As per the Ideal gas equation the pressure exerted by a gas is given as:

P = nRT/V------------ (1)

For the non-ideal behavior, the pressure is expressed in terms of the Vander-Waals equation:

P = [nRT/V-nb] - n2a/V2 --------------(2)

Equation 2 takes into account the intermolecular forces of attraction between gas molecules which contribute to its non-ideal behavior. The conditions that strongly influence non-ideal nature are high pressures,low temperatures and relatively large size of the gas molecule.

At high pressures the gas molecules are in a space where they are closer together and hence the influence of intermolecular forces become significant. At low temperatures, the kinetic energy of the gas molecules decreases along with it the energy required to overcome the intermolecular forces of attraction will also decrease. Large size implies higher atomic number and hence greater number of electrons. The elctron cloud surrounding a gas molecule will create an induced dipole leading to dipole-dipole interactions.

From the given choices, the high system pressure and realtively large size of chlorine will contribute to the non-ideal behavior.

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