Answer to Question #99778 in General Chemistry for Madelene Tamba

Question

Can alkalinity be tested on litmus paper?

Answer 1

Litmus paper turns blue under basic or alkaline conditions.

Wet litmus paper can also be used to test for water-soluble gases that affect acidity or alkalinity; the gas dissolves in the water and the resulting solution colors the litmus paper. For instance, ammonia gas, which is alkaline, turns litmus paper blue.