Would mixing salt and water with red cabbage juice create a chemical reaction?

Yes, mixing salt and water with red cabbage juice will create a chemical reaction. Red cabbage contains a pigment called anthocyanin, which is responsible for its purple color. When salt is added to the cabbage juice, the anthocyanin molecules interact with the sodium ions in the salt to form a new compound called flavylium ions. These flavylium ions are responsible for the red color of the solution.

The chemical reaction that takes place can be represented by the following equation:

Anthocyanin + Na+ → Flavylium ion + H2O

The addition of water to the solution helps to facilitate the reaction by dissolving the salt and allowing the anthocyanin molecules to come into contact with the sodium ions. The reaction is reversible, meaning that the red color of the solution will disappear if the salt is removed.