At 298 K, `K_(p)` for the reaction : `N_(2)O_(4)(g) iff 2NO_(2)(g)` is 0.98. Predict whether the reaction is spontaneous or not.

Explanation

To determine whether the reaction \( N_2O_4(g) \rightleftharpoons 2NO_2(g) \) is spontaneous at 298 K given that \( K_p = 0.98 \), we can use the relationship between the Gibbs free energy change (\( \Delta G \)) and the equilibrium constant (\( K_p \)).

### Step-by-Step Solution:

1. **Understand the relationship between \( \Delta G \) and \( K_p \)**:
The relationship is given by the equation:
\[
\Delta G = \Delta G^\circ + RT \ln K_p
...