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If a solution turns litmus paper blue, what color will phenolphthalein turn?

Pink

When a solution turns litmus paper blue, it indicates that the solution is basic (or alkaline) in nature. Phenolphthalein is a pH indicator that is commonly used to visualize pH changes in a solution. In basic solutions, phenolphthalein undergoes a chemical change that causes it to turn a pink color.

In a neutral or acidic environment, phenolphthalein remains colorless. However, as the pH of the solution increases and reaches a basic level, the phenolphthalein starts to show vibrant pink coloration. This property makes phenolphthalein a useful indicator in titrations and other chemical analyses where it is essential to determine the acidity or basicity of a solution.

Understanding this relationship between pH, litmus paper, and phenolphthalein is crucial for recognizing how different indicators respond to varied pH levels.

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Green

Yellow

Colorless

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