A range of production processes frequently employ acid mixtures comprised of two or three acids; for example, nitric acids, sulfuric acids and hydrochloric acids. In order to use these acids safely ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

I’m sure many of you reading this can remember your first acid-base titrations in chemistry class—the thrill of watching the pH indicator change color, and the fear of opening the stopper too much and ...

THE structure of polyadenylic acid can be expected to have some influence on the availability of polar groups, such as the primary amino-group of the adenine base, for binding of hydrogen ions.

Efficient process control and reliable plant operations are essential for the successful running of a petroleum refinery. One of the main causes of decreased efficiency in the refining process is ...

The titration reaches its endpoint when the titrating agent has achieved a volume sufficient to react the total amount of water in the sample. Water and iodine are used up in an equimolar ratio. The ...