WebJul 20, 2024 · 14.9: Indicators. We mentioned that in most titrations it is necessary to add an indicator which produces a sudden color change at the equivalence point. A typical indicator for acid-base titrations is phenolphthalein, HC 20 H 13 O 4. Phenolphthalein, whose structure is shown below, is a colorless weak acid ( Ka = 3 × 10 –10 mol/L). WebApr 11, 2024 · Jual Indikator Phenolphthalein 25 Gram Lengkap Dengan Pilihan Harga Termurah April 2024 Di Blibli. Promo Gratis Ongkir, 2 Jam Sampai, Dan Berpotensi Cashback. MERCK 1.07233.0025 Phenolphthalein Indicator 25g Rp1.160.000 Rp1.508.000 23% OFF Kota Jakarta Barat.
14.9: Indicators - Chemistry LibreTexts
WebPhenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound. Phenolphthalein is a member of phenols. It is functionally related to a 2-benzofuran-1 (3H)-one. WebApr 11, 2024 · Jual Indikator Phenolphthalein 25 Gram Lengkap Dengan Pilihan Harga Termurah April 2024 Di Blibli. Promo Gratis Ongkir, 2 Jam Sampai, Dan Berpotensi … gigabyte z170 preparing automatic repair
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WebPhenolphthalein (fē-nəl-ˈtha-lē-ən) is a chemical compound with the formula C 20 H 14 O 4 (often written as "HIn" in shorthand notation).Often used in titrations, it turns colorless in acidic solutions and pink in basic solutions. If the concentration of indicator is particularly strong, it can appear purple. In solutions containing a pH below 0, phenolphthalein turns a … WebPhenolphthalein definition, a white, crystalline compound, C20H14O4, used as an indicator in acid-base titration and as a laxative. See more. Web*Harga berbeda di tiap apotik . Tambah ke Keranjang . Kemasan aman & personal. Siap diantar 24 jam. Dikirim dari apotek resmi. ... Per 5 mL : liquidum parafin 1,5 gram, phenolphthalein 75 mg, gliserin 1 gram. Dosis. Dewasa : 2 sendok takar emulsi. Anak 6-12 tahun : 1 sendok takar emulsi . gigabyte z170x-gaming 3 network adapte