The equation of `(P_(c )V_(c ))/(RT_(c ))` = ..........

Explanation

To solve the equation \((P_c V_c)/(R T_c)\), we will use the definitions of critical pressure (\(P_c\)), critical volume (\(V_c\)), and critical temperature (\(T_c\)) in terms of constants \(a\) and \(b\).

### Step-by-Step Solution:

1. **Identify the formulas for critical properties**:
- Critical Pressure: \(P_c = \frac{a}{27b^2}\)
- Critical Volume: \(V_c = 3b\)
- Critical Temperature: \(T_c = \frac{8a}{27Rb}\)
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