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Which idicator is red in acid and purple in an alkali?
The indicator that turns red in acid and purple in alkali is phenolphthalein. In acidic solutions, phenolphthalein appears colorless or red, depending on concentration, while in alkaline solutions, it turns purple. This property makes it useful for determining pH levels in various chemical applications.
When a base and an acid neutralize one another the litmus turns what color?
The color is purple in a neutral solution.
What causes the litmus to change from purple to pink during fat digestion?
It turns pink when there is more acid in the environment when the fat is broken down into fatty acid.
What colour does purple litmus paper turn when mixed with sulpheric acid?
Litmus paper will turn red in sulphuric acid.
Why does the indicator goes purple in sodium hydroxide solution?
The purple color in sodium hydroxide solution is an indicator of the presence of phenolphthalein, which turns pink in basic solutions. When phenolphthalein is added to sodium hydroxide solution, it reacts with the hydroxide ions in the solution to form the purple color.
What turns purple when sprayed with bleach?
Red cabbage juice turns purple when sprayed with bleach.
What colour phenol red indicator in dilute sulphuric acid?
below pH 6.8above pH 8.26.8 yellow↔8.2 purple
What colour does phenolpthalien go when its added to acid?
In acid: colorless8.2 purple]In base: purple
What is the the difference between purple and purple?
well you see purple is a colour where as purple is how you feel on acid
What colors do litmus paper and phenolpthalein turn in presence of an acid or of base?
Litmus paper: red color in acidic solutions and blue color in basic solutions.Phenolphthalein: no color in acidic solutions.
What is bromophenol blue used for?
It is used as a pH (acid-base) indicator, particularly for substances with an expected pH between 3.0 and 4.6. Bromophenol blue turns yellow at or below a pH of 3.0. It turns purple at or above a pH of 4.6.
What color does universal indicator turn if acid or alkali is added to it?
Using Standard Ph paper it is bright red. The paper should come with a color scale like so http://jchemed.chem.wisc.edu/jcesoft/cca/CCA3/STILLS/ENDO2/ENDO3/64JPG48/28.JPG
