Indicators are cool substances that help us figure out the pH of a solution. They guide us through the interesting world of acids and bases!
Chemical Structure: Indicators are weak acids or bases. Their structure changes when they meet different pH levels.
Color Change: Depending on the pH, indicators change color. For instance, litmus paper turns red in acidic solutions (pH < 7) and blue in basic solutions (pH > 7).
When we do a neutralization reaction, like mixing hydrochloric acid (HCl) with sodium hydroxide (NaOH), an indicator shows us how the solution changes from acidic to neutral. If we use phenolphthalein, it turns from colorless in acid to pink in a basic solution. This makes it easy to see when the reaction is complete!
So, next time you check pH, remember that indicators are your helpful color-changing friends!
Indicators are cool substances that help us figure out the pH of a solution. They guide us through the interesting world of acids and bases!
Chemical Structure: Indicators are weak acids or bases. Their structure changes when they meet different pH levels.
Color Change: Depending on the pH, indicators change color. For instance, litmus paper turns red in acidic solutions (pH < 7) and blue in basic solutions (pH > 7).
When we do a neutralization reaction, like mixing hydrochloric acid (HCl) with sodium hydroxide (NaOH), an indicator shows us how the solution changes from acidic to neutral. If we use phenolphthalein, it turns from colorless in acid to pink in a basic solution. This makes it easy to see when the reaction is complete!
So, next time you check pH, remember that indicators are your helpful color-changing friends!