Praktikum Indikator Asam Basa Alami

Summary

In this video, Ni Ketut Pradnya Paramita Karyadi demonstrates an experiment using natural indicators to test the pH levels of various liquids. She tests extracts from hibiscus flowers, butterfly pea flowers, and turmeric against substances like vinegar, soap water, lime water, and lemon juice. The results reveal how these natural extracts change color in response to acidic or basic solutions, highlighting their potential as natural pH indicators. The experiment concludes that hibiscus, butterfly pea, and turmeric extracts can effectively indicate the acidity or alkalinity of solutions.

Takeaways

• 😀 The speaker's name is Ni Ketut Pradnya Paramita Karyadi, and they are performing a chemistry practical on natural acid-base indicators.
• 😀 Three natural materials used as acid-base indicators are hibiscus extract, butterfly pea flower extract, and turmeric extract.
• 😀 The liquids tested for their acidity or alkalinity are vinegar, soap water, lemon juice, and lime water.
• 😀 Hibiscus extract is red in color and turns red in vinegar, blue in soap water, red in lemon juice, and blue in lime water.
• 😀 Based on hibiscus extract’s reaction, vinegar and lemon juice are acidic, while soap water and lime water are alkaline.
• 😀 Butterfly pea flower extract is blue in color and turns purple in vinegar, blue in soap water, purple in lemon juice, and blue in lime water.
• 😀 Butterfly pea flower extract indicates that vinegar and lemon juice are acidic, while soap water and lime water are alkaline.
• 😀 Turmeric extract is yellow and turns bright yellow in vinegar and lemon juice, brown in soap water and lime water.
• 😀 Turmeric extract shows that vinegar and lemon juice are acidic, while soap water and lime water are alkaline.
• 😀 The experiment concludes that hibiscus, butterfly pea, and turmeric extracts can all be used as natural indicators to determine the pH of liquids, identifying acidic and alkaline solutions.

Q & A

What natural materials were used as pH indicators in the experiment?

The experiment used three natural materials as pH indicators: hibiscus flower extract, butterfly pea flower extract, and turmeric extract.

Which solutions were tested with the natural indicators?

The solutions tested in the experiment were vinegar, soap water, lemon juice, and lime water.

What color did the hibiscus flower extract turn when tested in vinegar?

The hibiscus flower extract turned red when tested in vinegar, indicating that vinegar is an acidic solution.

How did the butterfly pea flower extract react when added to lemon juice?

The butterfly pea flower extract turned purple when added to lemon juice, indicating that lemon juice is an acidic solution.

What was the color change of the turmeric extract when mixed with soap water?

The turmeric extract turned brownish when mixed with soap water, indicating that soap water is a basic solution.

What does the color change of the hibiscus flower extract in lime water suggest?

When the hibiscus flower extract turned blue in lime water, it indicated that lime water is a basic solution.

What does the change in color of the natural indicators demonstrate?

The color change of the natural indicators demonstrates the pH level of the solution, showing whether the solution is acidic or basic.

Why is hibiscus flower extract useful as a pH indicator?

Hibiscus flower extract is useful as a pH indicator because it changes color based on the acidity or basicity of the solution, making it a simple way to determine pH.

How can turmeric extract be used to identify acidic and basic solutions?

Turmeric extract turns bright yellow in acidic solutions (like vinegar and lemon juice) and brownish in basic solutions (like soap water and lime water), making it useful as a pH indicator.

What can we conclude about the pH of soap water and lime water based on the experiment?

Based on the experiment, soap water and lime water are basic solutions, as they caused the natural indicators to change to blue or brownish colors.