0
It does turn orange at exceptionally low pH (below 0), but that corresponds to a fairly high (greater than 1 molar) concentration of a strong acid. Between pH 0 and pH 8 or so it's colorless, so it's not particularly useful as an indicator for most acids. Somewhere between pH 8 and pH 10 it begins to turn a characteristic pink color. Above pH 12 the color fades again.
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What indicator will be used in standardization of sulfuric acid against sodium carbonate?
In this experiment, methyl orange is used because: Its end point matching the equivalent point of the acid-base titration.
What phenolphthalein react with?
I've done this reaction in many different varieties.The reaction is actually 2 condensation reactions between 2 equivalents phenol and phthalic acid in acidic conditions. The original Bayer process from the 1890s was in concentrated sulphuric acid. Modern reaction tend to use methylsulfuric acid (e.g New J. Chem., 1999, 23, 1187 - 1192).
When you add an acid to a carbonate to a universal indicator it turns milky?
This is false. When you add a carbonate to universal indicator it's does not turn milky. In actual fact it turns either like thick bubbly layers or stay the same depending on the acid type are using in this situation. Because of chemistry scientists have sussed that there is no acid which can make the universal indicator turn milky. So the answer to the question is no and if you have to put this question into into a trye or false table then this question would go under FALSE because it does not turn milky.
Why does adding carbon dioxide to BTB solution cause a color change?
BTB is an acid indicator. by adding carbon dioxide to the solution, it will turn into carbonic acid (a weak acid) turns green in low concentration and yellow in high concentration.
What colour does bromine go to with universal indicator?
Red! Sulphuric acid has a pH of about 2.
Does phenolphthalein indicator remain clear in a acid?
Fdf
Why is phenolphthalein used in the titration experiment?
it is used as an acid-base indicator
is phenolphthalein clear in acid?
yes
Why is phenolphthalein indicator used in the titration of oxalic acid against sodium hydroxide?
Yes. Phenolphthalein can be used as an indicator for the titration of a weak acid (oxalic acid) against strong base (sodium hydroxide).
Why you use phenolphthalein in titration?
it acts as acid base indicator
Why phenolphthalein used in titration?
it acts as acid base indicator
How do you turn phenolphthalein clear?
Add an acid.
Indicators used in acid base titration?
It depends on the acid or base used. For strong acid vs. strong base, phenolphthalein can be used as indicator. For strong acid vs. weak base, methyl orange can be used as indicator. For weak acid vs. strong base, phenolphthalein can be used as indicator.
Why is phenolphthalein is used in titration experiment?
it is used as an acid-base indicator
What happens if phenolphthalein solution is added in hydrochloric acid?
Because Hydrochloric acid is an acid, phenolphthalein would be clear. In bases Phenolphtlalein becomes pink
Best indicator for lactic acid when titrated against standard NaOH?
phenolphthalein.
What is the action of sodium hydroxide on the colour of phenolphthalein?
Phenolphthalein is pink in basic solutions.Phenolphthalein is used as an indicator in volumetry - acid-base titration.
