In the purification of bauxite ore as preliminary step in the production of `AI, [AI(OH_(4))]` can be converted to `AI(OH)_(3)` by passing `CO_(2)` through it. Write an equation for the reaction that occurs.

Explanation

To convert `Al(OH)₄⁻` to `Al(OH)₃` by passing `CO₂` through it, we can write the following step-by-step solution:

### Step 1: Understand the Reactants
We start with the complex ion `Al(OH)₄⁻` (aluminate ion) in an aqueous solution. When we pass `CO₂` into this solution, it reacts with water to form carbonic acid, which is a weak acid.

### Step 2: Write the Reaction of CO₂ with Water
The reaction of carbon dioxide with water can be represented as:
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