phenolphthalein उदाहरण वाक्य

250.0 mL of an unknown HCl solution was titrated with 14.75 mL of 0.0762 M NaOH to the phenolphthalein end point.
Bayer also markets Phillips'Milk of Magnesia, Phillips'Chewable Tablets and Haley's MO, which do not contain phenolphthalein, the company said.
Novartis AG recently pulled its phenolphthalein-containing Ex-Lax off U . S . shelves after the government proposed banning the ingredient due to cancer risk.
Novartis AG recently pulled its phenolphthalein-containing Ex-Lax off U . S . shelves after the government proposed banning the ingredient because of cancer risk.
The equivalence point occurs between pH 8-10, indicating the solution is basic at the equivalence point and an indicator such as phenolphthalein would be appropriate.

Phenolphthalein's pH sensitivity is exploited in other applications : Concrete has naturally high pH due to the calcium hydroxide formed when Portland cement reacts with water.
In several sources, the structure of phenol red is shown with the sulfur atom being part of a cyclic group, similar to the structure of phenolphthalein.
Our feeling has always been that phenolphthalein has been used for almost 100 years by millions of people and that it is safe and effective when used as labeled,
And cleaned blood stains are detected by spraying the area with a mixture of phenolphthalein and hydrogen peroxide, and then looking at the area with an ultraviolet lamp.
FDA spokeswoman Ivy Kupec said the agency has not received " adverse event reports " from companies that market preparations containing phenolphthalein suggesting that it was causing cancer.