`20 mL of 0.2MAl_(2)(SO_(4))_(3)` mixed with `20 mL` of `6.6M BaCl_(2)`. Calculate the concentration of Cl- ion in solution.

Explanation

To calculate the concentration of Cl⁻ ions in the solution when 20 mL of 0.2 M Al₂(SO₄)₃ is mixed with 20 mL of 6.6 M BaCl₂, follow these steps:

### Step 1: Calculate the total amount of Cl⁻ ions from BaCl₂
BaCl₂ dissociates in solution to produce 2 Cl⁻ ions for each formula unit. Therefore, the total amount of Cl⁻ ions can be calculated as follows:

1. **Find the number of moles of BaCl₂ in 20 mL of 6.6 M solution:**
\[
\text{Moles of BaCl₂} = \text{Concentration} \times \text{Volume} = 6.6 \, \text{mol/L} \times 0.020 \, \text{L} = 0.132 \, \text{mol}
...