Indicators, like litmus and phenolphthalein, are super important for figuring out if a solution is acidic or basic. They change color depending on the pH level.

Here’s how they work:

• Litmus:

  • It turns red in acids (when pH is less than 4.5).
  • It turns blue in bases (when pH is more than 8.3).

• Phenolphthalein:

  • It stays colorless in acidic solutions (when pH is less than 8.2).
  • It turns pink in basic solutions (when pH is more than 10).

These indicators help us see the pH of different solutions. By looking at their colors, we can tell if a solution is acidic, neutral, or basic.