The equilibrium constant has no unit if `Deltan`= ………….

Explanation

To determine when the equilibrium constant (Kc) has no unit, we need to understand the concept of Δn, which represents the change in the number of moles of reactants and products in a chemical reaction.

### Step-by-Step Solution:

1. **Define Δn**:
- Δn is defined as the difference between the total number of moles of products and the total number of moles of reactants in a balanced chemical equation.
- Mathematically, it can be expressed as:
\[
...