A blue litmus paper turns red when dipped into a solution. What does this indicate about the solutio

JAMB Chemistry 2023 67 views

A blue litmus paper turns red when dipped into a solution. What does this indicate about the solution?

  1. The solution is acidic ✓
  2. The solution is basic
  3. The solution is neutral
  4. The litmus paper is faulty

Explanation

Blue litmus paper contains a dye that changes color when it contacts acids. When the paper turns from blue to red, this shows the solution has acidic properties.

Acids release hydrogen ions in water, which react with the blue dye in litmus paper. This chemical reaction causes the color change from blue to red.

Basic solutions would turn red litmus paper blue instead. Neutral solutions would not change the color of either red or blue litmus paper at all.

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