Describe the preparation of potassium dichromate from chromite ore. What is the effect of increasing pH of potassium dichromate solution ?

Explanation

### Step-by-Step Solution

**Step 1: Understanding Chromite Ore**
- Chromite ore is represented by the chemical formula FeCr₂O₄. It is the primary source of chromium.

**Step 2: Reaction with Sodium Hydroxide (NaOH)**
- The first step in the preparation of potassium dichromate from chromite ore involves reacting chromite ore with sodium hydroxide (NaOH) and oxygen (O₂).
- The reaction can be represented as:
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