The `pH` of `0.05M` aqueous solution of diethy`1` amine is `12.0` . Caluclate `K_(b)`.

Explanation

To calculate the \( K_b \) for diethylamine from the given pH and concentration, follow these steps:

### Step 1: Calculate pOH
Given:
- \( \text{pH} = 12.0 \)

Using the relationship:
\[
...