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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. 555 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. 1,928 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. 625 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. 101 views
The chemical phenolphthalein can be clear or pink depending on the pH of the solution. Which role would phenolphthalein most
1. 1 answer
2. asked by 32 million bees
3. 73 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. 843 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. 3,192 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. 727 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. 539 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. 991 views