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 ...

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 ...

UNDER this title McHenry and Graham 1 have published an investigation on the ascorbic acid content of raw and cooked foodstuffs. They found in the case of cauliflowers, carrots, parsnips, beets and ...

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 ...

The equilibrium constant for this reaction, referred to as the acid dissociation constant, K a, is expressed in Equation 2.

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 ...

1. Some species of herbaceous and semiwoody weeds, shrubs, and trees were sprayed with 1000-2000 p.p.m, aqueous solutions of 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic ...