Acids and bases can change the color of substances called acid-base indicators. Red cabbage contains a chemical called anthocyanin. This pigment is a natural acid-base indicator. It is blue in neutral ...

The acid and conjugate base each have different colors and as the equilibrium shifts from one direction to the other, the color of the indicator changes. As an example, the equilibrium of a weak acid ...

The acid and conjugate base each have different colors and as the equilibrium shifts from one direction to the other, the color of the indicator changes. As an example, the equilibrium of a weak acid ...

Indicators change color depending on whether they are mixed with an acid or a base. Turmeric is a powdered spice made of the crushed roots of a plant. It contains a natural indicator called curcumin ...

Make an acid-base indicator. Dr Yan uses some very colourful science to find out what's acidic in his kitchen. Take 1/4 red cabbage. Finely slice the cabbage. Put all the chopped-up cabbage into a ...