Question

Prepare red cabbage juice by boiling a piece of red cabbage in water. Use it as an indicator and test the acidic and basic solutions with it. Present your observations in the form of a table.

Answer 1

Red Cabbage Juice as an Indicator:

1. Prepare the Indicator:

   • Boil a piece of red cabbage in water until the water turns dark purple. This cabbage juice will act as a pH indicator.

2. Testing Solutions:

   • Collect various acidic and basic solutions for testing (e.g., lemon juice, vinegar, baking soda solution, soap water).

3. Observations:

Solution	Colour Change with Red Cabbage Juice	Nature
Lemon Juice	Pink/Red	Acidic
Vinegar	Pink/Red	Acidic
Baking Soda Solution	Green/Blue	Basic
Soap Water	Green/Blue	Basic
Distilled Water	Purple (No change)	Neutral

Explanation:

• Acidic solutions turn the red cabbage juice pink/red.
• Basic solutions turn the red cabbage juice green/blue.
• Neutral solutions show no significant colour change, remaining purple.