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Write the changes when Four millilitre...

Write the changes when
Four millilitre of alkaline solution of phenolphthalein is added to 10 mL of sulphuric acid. 

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### Step-by-Step Solution: 1. **Identify the Components**: - We have 4 mL of an alkaline solution containing phenolphthalein and 10 mL of sulfuric acid (H₂SO₄). 2. **Understand the Properties of Phenolphthalein**: - Phenolphthalein is a pH indicator that is pink in alkaline (basic) solutions and colorless in acidic solutions. ...
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