Estimate the critical constants for diphenylmethane using Lydersen’s method; normal boiling point 537.5 K, molecular mass 168.2, structural formula:

Question

Accepted Answer

[latex]T_{c}=\frac{537.5}{\left(0.567+0.152-0.152^{2}\right)}=\underline{\underline{772 k }}[/latex]

experimental value 767 K,

[latex]P_{c}=\frac{168.2}{(0.34+2.075)^{2}}=28.8 atm[/latex]

experimental value 28.2 atm,

[latex]V_{c}=0.04+0.497=0.537 m ^{3} / kmol[/latex]

Question 8.14: Estimate the critical constants for diphenylmethane using Ly...