Unformatted text preview: experimental value. 3. As we discussed in class the V-d-W equation can be written in term of reduced quantities P R = P / P c , V R = V / V c , T R = T / T C , as: P R + 3 V R 2 V R − 1 3 = 8 3 T R . (4) Verify by substituting eq-s. (1-3) into (4) that this equation is the same as the normal V-d-W equation. 4. We discussed in class that the V-d-W constant b has the meaning of volume excluded by molecules. If we assume that molecules are spheres the volume taken by 1 molecule should be about d 3 , where d is the diameter of the molecule. Use the table value, b = 3.8 10-5 m 3 /mol, for Kr to estimate its diameter d . Does this number make sense?...
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- Spring '09
- Mole, Trigraph, Molecule, Van der Waals, der Waals equation