What is the color of a solution that contains two drops of ohenolphthalein in acideic solution? What is the color in basic solution?

My answer is the color in acidic turns colorless in basic solution the color will be pink. Pls. correct me if i'm wrong.

3 answers

Looks good to me.

thanks

You are correct! Phenolphthalein is a commonly used pH indicator that changes color depending on the acidity or basicity of a solution. In an acidic solution, it is colorless. When a few drops of phenolphthalein are added to an acidic solution, it remains colorless. However, in a basic solution with a pH greater than 8.2, phenolphthalein turns pink or magenta.

To determine the colors in acidic and basic solutions, you need to understand phenolphthalein's behavior as a pH indicator. You can conduct a simple experiment to observe the color change firsthand.

Here are step-by-step instructions:

1. Start with a small, clear container and fill it with a solution that you want to test for acidity or basicity. You can use distilled water or any other suitable liquid.

2. Add two drops of phenolphthalein to the solution. Make sure the drops are uniform in size to maintain consistency.

3. Observe the color of the solution after the drops are added. In an acidic solution (pH below 8.2), the color will remain colorless. In a basic solution (pH greater than 8.2), it will turn pink or magenta.

Remember, the exact shade of pink can vary depending on the concentration and pH level of the basic solution.