Testing Acidity using Litmus Paper

What does it mean when litmus paper turns pink after testing a solution?

A. The solution is basic

B. The solution is acidic

C. The solution is neutral

Answer:

The correct answer is: B. The solution is acidic

Litmus paper is a commonly used indicator to test the acidity or alkalinity of a solution. When litmus paper turns pink, it indicates that the solution is acidic. Acids have a low pH level, which causes the litmus paper to change color from blue to pink. This color change is a result of the chemical reaction between the litmus paper and the hydrogen ions present in the acidic solution.

Acidic solutions are characterized by their ability to donate protons or accept electrons in chemical reactions. They typically have a sour taste and can corrode certain materials. Examples of common acidic substances include lemon juice, vinegar, and hydrochloric acid.

It is important to be cautious when handling acidic solutions, as they can be corrosive and harmful if not used properly. Litmus paper is a simple tool that can be used to quickly determine the acidity of a solution and guide the appropriate handling and precautionary measures.