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 ...

Two types of acid-base titration stand out: alkalimetry and acidimetry. Each method provides a precise means to measure compounds based on their acid or basic content, depending on the type of the ...

Polyurethanes, formed through the reaction of raw polyols with isocyanates, are one of the most widely used types of plastics today. By varying the starting materials, a diverse range of plastics can ...

The quantity of potassium hydroxide needed for neutralization of half of the anhydride groups, all free acids and all carboxyl-terminated groups of an unsaturated polyester resin (UPR), is indicated ...

The process of carrying out a titration allows us to accurately measure the volumes of an acid and an alkali required for neutralisation. An indicator will be used to determine the exact volume ...

WHEN an equal volume of 3 percent hydrogen peroxide is added to a slightly acidified ascorbic acid solution, no appreciable effect on the indophenol titration value is observed, unless iron or copper ...