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Which gases has higher van der Waals coefficient b , neglect any potential effects due to...

Which gases has higher van der Waals coefficient b , neglect any potential effects due to temperature. 1) Ne or Kr 2) benzene or naphthalene
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Answer #1

1. the coefficient b is higher for Kr than Ne because the larger value of b signifies that the size of molecule is larger and hence the forces acting should become larger due to increase in surface area . this should ensure easier LIQUIFICATION. the value of b for Kr is 0.0396 and for Ne is 0.01672

2. the value of b for benzene is 0.1154 and for naphthalene is 0.1920 .so b is higher for NAPHTHALENE because it signifies the volume that is effectively taken out per molecule by intermolecular repulsive interactions. small b value help the gas to liquify

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