A universal indicator is a mixture of several indicators that change color at different concentrations of hydrogen ions in a solution. It provides a range of colors to indicate the pH of a solution.
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A universal indicator is a mixture of several different indicators that displays a broad spectrum of colors across the pH scale. It works by undergoing distinct color changes at different pH levels. In acidic conditions, it may appear red or orange, while in basic solutions, it can range from green to violet. The indicator solution contains various dyes, each sensitive to a specific pH range, resulting in a composite color response. By observing the color change, the pH of a solution can be estimated, making universal indicators versatile tools for qualitative pH assessments in laboratories and educational settings.