What is an indicator? Describe what you would expect to see if one or two drops of phenolphthalein were added to solutions that were...

  1. Neutral
  2. Basic
  3. Acidic

1 Answer
May 17, 2018

An indicator is a substance that show the presence of a chemical substance. For this indicator, neutral will be clear, basic pink, and acidic clear.

Explanation:

Phenolphthalein is an acid-base indicator and changes color based on a solution’s pH. The indicator is clear and colorless in a neutral or acidic solution. It turns pink in a basic solution.

So, in neutral solution, it will remain clear
In an acidic solution, it will remain clear.
In a basic solution, it will turn pink.