Universal indicator turns blue or purple in ammonia solution. Ammonia is a weak base, so it causes the indicator to change to a blue or purple color on the pH scale. This color change indicates the basic nature of the solution due to the presence of ammonia molecules.
Ammonia gas would turn universal indicator paper blue or purple depending on the concentration of ammonia present.
The pH of the base ammonia is, depending on its concentration between 11.1 (0.1M) and 12.1 (10M) so the color of the most common Yamada's Universal Indicator will be purple (or blue if pH < 11, ready to use household ammonia)
Universal indicator turns shades of blue or purple in an alkali.
Universal indicator would be dark blue or purple in a strong alkali.
The solution will turn purple (alkaline) when water and universal indicator are added to magnesium oxide. This indicates a high pH level.
The universal indicator turns blue or dark green in an ammonia solution.
Universal indicator paper will turn blue or blue-green when dipped into ammonia solution, indicating that the solution is basic or alkaline.
Ammonia typically appears blue on a universal indicator.
Ammonia gas would turn universal indicator paper blue or purple depending on the concentration of ammonia present.
A neutral solution added to universal indicator will turn green.
The color of universal indicator solution in a neutral solution is green.
The color of universal indicator solution for bleach is typically blue or purple, indicating a high pH level.
red
Universal indicator turns dark blue or purple in a strong alkaline solution.
The color of universal indicator in smelling salts can vary depending on the specific chemical composition and pH of the salts. However, typically smelling salts with universal indicator will change color to indicate the presence of ammonia gas, which is often associated with a blue or green color change in the indicator solution.
Universal indicator solution turns a shade of red, orange, or yellow when added to an acidic solution.
The pH of the base ammonia is, depending on its concentration between 11.1 (0.1M) and 12.1 (10M) so the color of the most common Yamada's Universal Indicator will be purple (or blue if pH < 11, ready to use household ammonia)