Search results
Results from the WOW.Com Content Network
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
The non-random two-liquid model [1] (abbreviated NRTL model) is an activity coefficient model introduced by Renon and Prausnitz in 1968 that correlates the activity coefficients of a compound with its mole fractions in the liquid phase concerned. It is frequently applied in the field of chemical engineering to calculate phase equilibria.
Several factors must be assessed to determine if a chemical is a suitable substitute including potential hazards, exposure, technical feasibility, and low-budget considerations. [3] After substitutes are proposed, the risks of each substitute are compared to one another and tested until a suitable substitution is found.
Hazard substitutions can involve not only changing one chemical for another, but also using the same chemical in a less hazardous form. Substitutions can also be made to processes and equipment. In making a substitution, the hazards of the new material should be considered and monitored, so that a new hazard is not unwittingly introduced, [ 3 ...
Diethanolamine, often abbreviated as DEA or DEOA, is an organic compound with the formula HN(CH 2 CH 2 OH) 2.Pure diethanolamine is a white solid at room temperature, but its tendencies to absorb water and to supercool [2] often results in it being found in a colorless, viscous liquid state.
The same functional group will undergo the same or similar chemical reactions regardless of the rest of the molecule's composition. [ 1 ] [ 2 ] This enables systematic prediction of chemical reactions and behavior of chemical compounds and the design of chemical synthesis .
The word is half Latin and half Greek. No good can come of it." (referring to it being a hybrid word). A special class of terminology that overwhelmingly is derived from classical sources, is biological classification, in which binomial nomenclature still is most often based on classical origins. [12]
In organic chemistry, a substituent is one or a group of atoms that replaces (one or more) atoms, thereby becoming a moiety in the resultant (new) molecule. [1] ( In organic chemistry and biochemistry, the terms substituent and functional group, as well as side chain and pendant group, are used almost interchangeably to describe those branches from the parent structure, [2] though certain ...