Question
Download Solution PDFWhich of the following is not an acid-base indicator?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFKey Points
- Starch Paper is not an acid-base indicator.
- Acid-base indicators are substances that change color in response to changes in pH, helping to determine the acidity or alkalinity of a solution.
- Methyl Orange, Litmus, and Phenolphthalein are common acid-base indicators used in various chemical analyses.
- Starch Paper is typically used to detect the presence of iodine, not for measuring pH levels.
Additional Information
- Methyl Orange changes color from red to yellow over a pH range of 3.1 to 4.4.
- Litmus turns red in acidic conditions and blue in alkaline conditions, with a pH range of about 4.5 to 8.3.
- Phenolphthalein is colorless in acidic to neutral solutions and turns pink in basic solutions, with a pH range of 8.2 to 10.
- These indicators are essential tools in titrations and other laboratory experiments to determine the pH of different solutions.
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