Acid-Base Indicators (1962)

This educational film explores acid-base indicators and their color changes in response to acidity. It demonstrates how substances like tea, red cabbage, and litmus paper react when acids are added, leading to visible color changes. The film explains the chemical reactions involved, particularly focusing on bromothymol blue as an indicator, and discusses the concept of hydronium and hydroxide ions in neutral, acidic, and basic solutions. It also compares various indicators, detailing their ionization constants and relative strengths, ultimately illustrating the behavior of a universal indicator that combines multiple indicators to show a range of colors based on acidity.

Keywords
acid-base indicators, color change, bromothymol blue, hydronium ions, hydroxide ions, ionization constant, methyl orange, methyl red, phenolphthalein, universal indicator

Email us at footage@avgeeks.com if you have questions about the footage and are interested in using it in your project.