Must have pH indicators within +/- 1 of our given PH?
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Chem_Mod
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Must have pH indicators within +/- 1 of our given PH?
Question: Do the pH's that used to represent acidic, neutral, and basic solutions need to have pH indicators within +/- 1 of our pH values given exactly or they be represented with extremes? For example to represent a neutral solution at a pH=7 can we use phenolphthalein even though its pH value is 9.4 and greater than +/- 1 from the pH of the solution?
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Chem_Mod
- Posts: 23858
- Joined: Thu Aug 04, 2011 1:53 pm
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Re: must have pH indicators within +/- 1 of our given PH?
Answer: No they don't need to be within 1 pH unit. However phenolphthalein is not appropriate for a neutral solution.
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