Indicators

The video tutorial explains how pH can be measured both quantitatively and qualitatively. It introduces indicators, substances that change color based on the pH of a solution, and discusses various types of indicators such as universal indicator, litmus paper, phenolphthalein, and methyl orange. Each indicator has specific color changes that correspond to different pH levels, which help in determining whether a solution is acidic, neutral, or alkaline. The tutorial concludes by summarizing the role of indicators in pH measurement and their endpoints.

Explain the difference between blue and red litmus paper.

What are the characteristics of methyl orange as an indicator?