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Phenolphthalein changes from colorless to pink in the range of pH 8.2 - 10. If toothpaste has a pH that is below this range, phenolphthalein will not indicate the basicity. if the pH is higher, which I believe it is in most (some) toothpastes, then phenolphthalein can be used, because it will turn from colorless to pink.
What else can I help you with?
What is the reaction of phenolpthalein on acid and base?
make it useful for testing for signs of carbonation reactions in concrete
Is toothpaste an acid or base?
A base
Is toothpaste an acid or a base?
Toothpaste does not have acid in it, Toothpaste is an Alkalie.
Crest toothpaste is it an acid or base?
Crest toothpaste is an acid.
Is toothpaste juice a acid or base?
base
Is toothpaste juice a acid or base or neutral?
it a base
Is toothpaste acid or base?
NEUTRAL
What colour indicator is toothpaste in methyl orange?
Yellow because toothpaste is base
Which base is present in toothpaste?
The active ingredient of toothpaste is fluorine ions, which is not a base. Although there may be basic compounds added to toothpaste in order to make it a unique product according to the brands.
Why does toothpaste contain base?
toothpaste contains a weak base called hydroxyle because it helps to neutralize and to remove acid in mouth with the PH of 8 called a weak base
What is the examples of base?
A base can be glass cleaner, toothpaste, and bar of soap.
Is toothpaste an acid?
Toothpaste is a mild base, mostly because one of its "abrasives" is baking soda.
