Understanding pH Levels with Purple Cabbage Indicator

What colors represent the most basic, acidic, and neutral solutions using cabbage juice indicator solutions?

Answer:

The most basic solution is represented by the yellow green color (number 11), the most acidic solution is represented by the light pink color (number 2), and a neutral solution is represented by the purple color (number 6).

The Science Behind Purple Cabbage Indicator

Cabbage Juice Indicators: Cabbage juice indicators are common tools used in science experiments to demonstrate pH levels in solutions. The purple cabbage juice contains anthocyanin pigment, which can change color depending on the pH of the solution it is added to.

How pH Levels Are Represented

pH Scale: The pH scale ranges from 0 to 14, with 0 being the most acidic, 14 being the most basic, and 7 being neutral. When cabbage juice indicator is added to a solution, the color change indicates the pH level of that solution.

Color Changes in Different pH Levels

Color Transformation: The anthocyanin pigment in cabbage juice changes color based on the acidity or basicity of the solution. In acidic solutions, the color changes to light pink (number 2), in basic solutions it turns yellow green (number 11), and in neutral solutions, it appears purple (number 6).

Anthocyanin pigments are water-soluble and can shift between red, purple, and blue hues based on the pH of the medium they are in. This color-changing property makes cabbage juice a versatile indicator for pH levels in various solutions.

By understanding the color changes of purple cabbage juice indicators, scientists and students can easily visualize pH levels and differentiate between acidic, basic, and neutral solutions.