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 ...

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 ...

So toothpastes contain a base which neutralises the acid, protecting teeth. We will use titration procedures ... Speaker one That is the phenolphthalein. All right, give it a little swirl.

Within 2 minutes, precise and reliable acid number values can be obtained. The titration glass sensors for standard acid/base application in aqueous media or non-aqueous solutions are specifically ...