Here's how you can use universal indicator paper to distinguish between distilled water, sodium hydroxide solution, and ethanoic acid solution:

Understanding Universal Indicator Paper

* What it is: Universal indicator paper is a strip of paper impregnated with a mixture of dyes. This mixture changes color depending on the pH of the solution it's dipped into.

* Color Changes: The color changes are consistent, allowing you to determine the approximate pH of a solution. Here's a general guide (colors may vary slightly depending on the specific indicator):

* Very acidic: Red

* Acidic: Orange/Yellow

* Neutral: Green

* Basic/alkaline: Blue/Purple

* Very basic: Violet

Distinguishing the Solutions

1. Distilled Water: Distilled water is neutral, meaning its pH is 7. When you dip universal indicator paper into distilled water, it will turn green.

2. Sodium Hydroxide Solution: Sodium hydroxide (NaOH) is a strong base. When you dip universal indicator paper into a sodium hydroxide solution, it will turn a deep blue or violet color, indicating a very high pH.

3. Ethanoic Acid Solution: Ethanoic acid (CH₃COOH) is a weak acid. When you dip universal indicator paper into an ethanoic acid solution, it will turn orange or yellow, indicating an acidic pH.

In Summary

* Green: Distilled water (neutral)

* Blue/Violet: Sodium hydroxide solution (basic)

* Orange/Yellow: Ethanoic acid solution (acidic)

Important Note: Always handle chemicals with care and wear appropriate safety gear when performing experiments.