How Is Phenolphthalein Solution Made?

reactionchamber.orgImage: reactionchamber.orgThe correct way to prepare a phenolphthalein indicator solution (0.5%) is as follows: Weigh 0.5g Phenolphthalein powder. Add the powder to 50ml 100% (or 95%) Ethanol and stir well. Now make up the volume to 100ml by adding distilled water.

How to make 1% phenolphthalein at home?

PREPARATION OF 1% PHENOLPHTHALEIN. This a reagent used in the volumentric analysis of weqk acids and strong base. 1. Weigh 1g of phenolphthalein powder (for 1% Phenolphthalein) into 100ml volumetric flask. 2. Add 40ml of 95% ethanol and shake. 3. Make up to the mark with 95% ethanol.

How does phenolphthalein dissolve in aqueous solution?

Note: Phenolphthalein is an organic compound. Therefore, it has a very low solubility in water/ aqueous solutions. However, it dissolves quite well in Ethanol. You might observe a powdery residue if dissolved in 50% Ethanol (... Loading… Weigh 0.5g Phenolphthalein powder. Add the powder to 50ml 100% (or 95%) Ethanol and stir well.

How is phenolphthalein used in the laboratory?

Laboratory Chemical Safety Summary (LCSS) Phenolphthalein is an acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic. Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator.

How to make phenolphthalein from phthalic anhydride?

The same amounts of phenol and phthalic anhydride are mixed in a test tube and a few drops of concentrated sulfuric acid are added to the mixture. The test tube is then carefully heated until a thick, deep red liquid forms. This is poured into a beaker filled with plenty of water (500 ml).

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