Phenolphthalein - Wikipedia
Phenolphthalein (/ f ɛ ˈ n ɒ l (f) θ ə l iː n / [citation needed] feh-NOL(F)-thə-leen) is a chemical compound with the formula C 20 H 14 O 4 and is often written as "HIn", "HPh", "phph" or simply "Ph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations.
Phenolphthalein | pH indicator, acid-base titration, indicator dye ...
2024年11月7日 · phenolphthalein, (C 20 H 14 O 4), an organic compound of the phthalein family that is widely employed as an acid - base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0.
Phenolphthalein | C20H14O4 | CID 4764 - PubChem
Phenolphthalein | C20H14O4 | CID 4764 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Phenolphthalein Indicator - Science Notes and Projects
2022年1月19日 · Phenolphthalein indicator is a pH indicator solution that is colorless under acidic and extremely alkaline conditions and fuchsia pink under ordinary alkaline conditions. Here is a look at the colors at different pH ranges, the chemistry of the color change, how to make phenolphthalein indicator, and uses of the chemical.
Phenolphthalein: Structure, Properties, pH Indicator and Uses ...
2024年2月6日 · Phenolphthalein (C20H14O4) is an organic chemical compound often used as an indicator in acid-base titrations. Learn more about phenolpththalein and how is it used as indicator in detail in this article
Phenolphthalein - Structure, Properties, Uses of C20H14O4 - BYJU'S
Phenolphthalein, an organic compound with the chemical formula C20H14O4, is a weak acid which can be used as an indicator for acid-base titrations. In acidic solutions, the compound is colourless. It is pinkish in simple solutions (with the transition occurring around pH 9).
Phenolphthalein - Chemistry Online
2024年4月22日 · What is phenolphthalein? Phenolphthalein (molecular formula C 20 H 14 O 4) is a pH indicator. In acidic solutions it remains colorless, but in the presence of basic solutions it takes on a pinkish color with a turning point between …
Phenolphthalein | Magnificent molecules - RSC Education
2018年12月24日 · An organic molecule made of only carbon, hydrogen and oxygen, it was first synthesised in 1871 by Adolf von Baeyer, who combined phenol and phthalic anhydride in the presence of sulfuric acid or zinc chloride – the same method that is …
6. Acid-Base Indicators - Chemistry LibreTexts
2023年1月30日 · Phenolphthalein. Phenolphthalein is another commonly used indicator for titrations, and is another weak acid. In this case, the weak acid is colorless and its ion is bright pink. Adding extra hydrogen ions shifts the position of equilibrium to the left, and turns the indicator colorless.
Phenolphthalein - Structure, Properties, Synthesis and Uses
Phenolphthalein is a slightly acidic compound, hence considered a weak acid. Phenolphthalein has the chemical formula of C20H14O4and is a large organic molecule. In crystalline form, phenolphthalein appears to be white to yellow in colour. In short, it can be written as "HIn" or "php". It is readily soluble in alcohol and mildly soluble in water.
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