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why we use phenolphthalein indicator

If you have two solutions, one of pH 7 and one of pH 9, but they are not labeled, which indicator would be used to identify the
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2. asked by Chrissy
3. 515 views
Phenolphthalein is an indicator that changes colour to pink/purple between pH 8-->10, however, neutralization occurs when pH=7.
1. 3 answers
2. asked by Lucy
3. 1,839 views
A 25.0 mL sample of NaHSO4(aq) was titrated with 0.500 mol/L NaOH(aq) using phenolphthalein indicator. At the endpoint, one drop
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2. asked by Chem master
3. 576 views
The chemical phenolphthalein can be clear or pink depending on the pH of the solution. Which role would phenolphthalein most
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2. asked by n
3. 53 views
The chemical phenolphthalein can be clear or pink depending on the pH of the solution. Which role would phenolphthalein most
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2. asked by 32 million bees
3. 29 views
why we use phenolphthalein indicator in the determination of the strenght of NAOH by using standard oxalic acid why not the
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2. asked by sbr
3. 798 views
Phenolphthalein would not be an appropriate indicator to use to determine the Ka1 of phosphoric acid Why not? what indicator
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2. asked by ERAGON
3. 3,135 views
1) oi50 . tinypic . com / ejh6vm . jpgThe most suitable indicator for the titration is: A)methyl violet B)chlorophenol red
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2. asked by Rock
3. 672 views
what are the errors in the double-indicator titration of (sodium carbonate and sodium hydrogen carbonate) against hydrochloric
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2. asked by kay
3. 497 views
what are the errors in the double-indicator titration of (sodium carbonate and sodium hydrogen carbonate) against hydrochloric
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2. asked by kay
3. 947 views