acid–base indicator Phenolphthalein is another weak organic acid. It is not particularly water soluble, so we generally dissolve it in aqueous ethanol. The ethanol explains the pleasant, sweet smell of phenolphthalein solutions. Phenolphthalein is colourless and clear in acidic solutions, but imparts...
Step-by-Step Solution:1. Understanding Phenolphthalein: - Phenolphthalein is an acid-base indicator that changes color based on the pH of the solution. It is colorless in acidic solutions and turns pink in
Colour Index764 formSolid pka9.4(at 25ºC) colorWhite to yellow-white Packaging & Shipping Company Profile Yujiang Chemical (Shandong) Co., Ltd. We are located in Shandong with convenient transportation access. We are a professional manufacturer and trader that is concerne...
Colour White Molecular Weight 318.32 Solubleness Insoluble in Water, Soluble in Alcohol Assay 98.0%-101.0% Melting Point 260ºC HS 29322910 Product Name Phenolphthalein Sample Available Shelf Life 1-2 Years Transport Package Drum Package, Bag Package ...
(e)Phenolphthalein is an indicator and is represented by the formul a HIn.Phenolphthalein, HIn, is a weak acid.HInH++ In The K value for phenolphthalein is 5.0 × 10-10moldm-3 at 298 K. This indicator changes colour at a pH of approximately 8.8.[In-]Calculate the ratio n at pH ...
What is the color of phenolphthalein in a basic solution?What is an acid/base indicator?Phenolphthalein is an indicator that changes colour to pink/purple between pH 8 to 10, however, neutralization occurs when pH = 7. Why can phenolphthalein still ...
Noun1.phenolphthalein- a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 ...
Results show their fluorescence could be on鈥搊ff switched not only by different lights but also by acid/base. Besides lights and acid/base controllable colour change and fluorescence-changing, altering phase states could also tune their colours via different temperature, which is rare performance ...
Indicators are used to give an idea about the acidity or basicity of the solution as they are capable of changing colour at particular pH value, with the addition of acid or base.Answer and Explanation: Given data: The pH of the soluti...
It has been shown that complexes are formed with the protonated and dissociated forms of phenolphthalein as well; the dianion is complexed in alkaline solution in a colourless form. The complexes formed have the largest stability constants among cyclodextrin complexes known up to now. The unusual ...