If $-3 \le x < \frac{3}{2}$ and $x \ne 1$, define $C(x) = \frac{x^3}{1 - x}$.  The real root of the cubic $2x^3 + 3x - 7$ is of the form $p C^{-1}(q)$, where $p$ and $q$ are rational numbers.  What is the ordered pair $(p, q)$?
1. **Understanding the function \( C(x) \):**
   The function \( C(x) = \frac{x^3}{1 - x} \) is defined for \( x \in [-3, 1) \cup (1, \frac{3}{2}) \). This function is bijective on its domain, meaning it has an inverse function \( C^{-1}(y) \).

2. **Identifying the root \( r \):**
   We are given that the real root of the cubic equation \( 2x^3 + 3x - 7 = 0 \) is of the form \( r = p C^{-1}(q) \), where \( p \) and \( q \) are rational numbers. This implies \( \frac{r}{p} = C^{-1}(q) \).

3. **Expressing \( q \) in terms of \( r \) and \( p \):**
   Since \( \frac{r}{p} = C^{-1}(q) \), we have \( q = C\left(\frac{r}{p}\right) \). Substituting \( \frac{r}{p} \) into \( C(x) \), we get:
   \[
   q = C\left(\frac{r}{p}\right) = \frac{\left(\frac{r}{p}\right)^3}{1 - \frac{r}{p}} = \frac{\frac{r^3}{p^3}}{1 - \frac{r}{p}} = \frac{r^3}{p^3 - p^2 r}
   \]

4. **Relating \( r \) and \( q \):**
   From the above expression, we have:
   \[
   q = \frac{r^3}{p^3 - p^2 r}
   \]
   Rearranging this, we get:
   \[
   r^3 = q (p^3 - p^2 r)
   \]
   Simplifying further:
   \[
   r^3 = qp^3 - qp^2 r
   \]
   \[
   r^3 + qp^2 r = qp^3
   \]
   \[
   r (r^2 + qp^2) = qp^3
   \]
   \[
   r = \frac{qp^3}{r^2 + qp^2}
   \]

5. **Finding rational \( p \) and \( q \):**
   Since \( r \) is a root of \( 2x^3 + 3x - 7 = 0 \), we substitute \( r \) into the equation:
   \[
   2r^3 + 3r - 7 = 0
   \]
   Using the expression for \( r \) from above:
   \[
   2 \left(\frac{qp^3}{r^2 + qp^2}\right)^3 + 3 \left(\frac{qp^3}{r^2 + qp^2}\right) - 7 = 0
   \]
   This equation must hold true for rational \( p \) and \( q \).

6. **Solving for \( p \) and \( q \):**
   To find \( p \) and \( q \), we need to solve the system:
   \[
   2p^2q - 3 = 0
   \]
   \[
   2p^3q - 7 = 0
   \]
   Solving the first equation for \( q \):
   \[
   q = \frac{3}{2p^2}
   \]
   Substituting into the second equation:
   \[
   2p^3 \left(\frac{3}{2p^2}\right) - 7 = 0
   \]
   \[
   3p - 7 = 0
   \]
   \[
   p = \frac{7}{3}
   \]
   Substituting \( p = \frac{7}{3} \) back into the expression for \( q \):
   \[
   q = \frac{3}{2 \left(\frac{7}{3}\right)^2} = \frac{3}{2 \cdot \frac{49}{9}} = \frac{3 \cdot 9}{2 \cdot 49} = \frac{27}{98}
   \]

The final answer is \( \boxed{ (p, q) = \left(\frac{7}{3}, \frac{27}{98}\right) } \)