mention any three indicators used in acid based titration and their colour change
Three commonly used indicators in acid-base titrations and their corresponding color changes are:
1. Phenolphthalein: This indicator is commonly used in titrations involving strong acids and strong bases. It shows a color change from colorless (in acidic solution) to pink (in basic solution).
2. Methyl orange: This indicator is typically used in titrations involving weak acids and strong bases. It undergoes a color change from red (in acidic solution) to yellow (in basic solution).
3. Bromothymol blue: This indicator is often used in titrations involving weak bases and strong acids. It exhibits a color change from yellow (in acidic solution) to blue (in basic solution).