van der Waals Coefficients Calculator

Calculate the van der Waals constants \( a \) and \( b \) using the critical properties of a substance.
\[ a = \frac{27 R^2 T_c^2}{64 P_c} \quad \text{and} \quad b = \frac{R T_c}{8 P_c} \]

* Enter the critical temperature (K) and critical pressure (atm).

Step 1: Enter Critical Properties

Critical Temperature, \( T_c \) (K):

Example: 190 K

Critical Pressure, \( P_c \) (atm):

Example: 45 atm

Step 1: Enter Critical Properties

Calculated van der Waals Coefficients