Phenolphthalein is a color indicator used in acid/base titration. It has also been used as a laxative, but its over-the-counter uses had been withdrawn because of toxicological concerns over carcinogenicity. The metabolism of [ 14 C]-phenolphthalein was investigated in F344 rats and B6C3F1 ...
When dissolved in alcohol solution, it can be made of acid and alkali indicator. It is colorless in acid solution while exhibiting red color in the carbonate solution of alkali metal. However, if placed in the concentrated alkali solution, it will produce colorless tri-metal Salt so that the...
Phenolphthalein, an organic phthalein compound widely used as an acid-base indicator. As an indicator of the pH of a solution, phenolphthalein is colorless below pH 8.5 and pink to dark red above pH 9.0. What are the uses of phenolphthalein? A popular application of phenolphthalein is as an...
Hypernyms ("phenolphthalein" is a kind of...):laxative (a mild cathartic)acid-base indicator (an indicator that changes color on going from acidic to basic solutions)Credits© 1991-2023 The Titi Tudorancea Bulletin | Titi Tudorancea® is a Registered Trademark | Terms of use and privacy ...
Noun1.phenolphthalein- alaxativeusedinmanypreparationsundervarioustradenames;alsousedas anacid-baseindicatorintitrationsinvolvingweakacidsandstrongbasesbecauseit isbrilliantredathighalkalinityandcolorlessbelowpH 8 laxative- amildcathartic acid-base indicator- anindicatorthatchangescolorongoingfromacidictobasicsolutions...
What is the appearance and transparency of an oxalic acid solution? (a) What determines the color of light? (b) Describe the difference between red light and blue light. Why the addition of NH_3 should be precise in spectrophotometer reading? What if it gives a darker color?
Phenolphthalein Usage: This product is a commonly used acid indicator with the range of color change between pH 8.2 (colorless) to 10.0 (red). Phenolphthalein is also a drug, can be used as a laxative, acting on the colon for the treatment of constipation.Used as an acid-base indicator; ...
An indicator is used in titrations to determine the endpoint experimentally and visually. Indicators change their color at the endpoint (or near the endpoint) so that the human eye can detect the change. The change in color occurs either due to a redox reaction or an acid-base re...
A non-color changing eradicating fluid having a more moderate pH is also disclosed. The combination eradicable and re-write ink is disclosed which features phosphoric acid (or phosphorus pentoxide in solution) along with an eradicable dye. A combination writing and correction instrument that ...
<p>To determine which of the following substances will turn phenolphthalein pink, we need to understand how phenolphthalein behaves in different pH environments.</p><p>1. <strong>Understanding Phenolphthalein</strong>: - Phenolphthalein is a pH indic