Preparing solutions of most acid-base indicators is more complicated than just dissolving some of the powder in
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Preparing solutions of most acid-base indicators is more complicated than just dissolving some of the powder in water. Typical instructions may be to dissolve about 0.1 g of indicator in 50 mL alcohol; then add distilled water so that the total volume is about 100 mL. (More specific instructions are found in many standard reference books.) Explain why the mass of the indicator and the amounts of alcohol and water are important. Also explain why alcohol must be used. Why can’t pure distilled water be substituted?
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Chemistry Principles And Practice
ISBN: 9780534420123
3rd Edition
Authors: Daniel L. Reger, Scott R. Goode, David W. Ball
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