CHEMISTRY GLOSSARY

reaction mechanism    →   reakcijski mehanizam

Reaction mechanism is a list of all elementary reactions that occur in the course of an overall chemical reaction.

reaction order    →   red reakcije

Order of a reaction (n) is the sum of the exponents of the concentration terms in a rate equation.

Total order of a reaction is

reaction speed curve    →   krivulja brzine reakcije

Reaction speed curve is a graphic presentation of the reactant quantity change in dependence on time value.

reverse osmosis    →   reverzna osmoza

Reverse osmosis is the method used for obtaining freshwater from saltwater. The process uses a semi-permeable membrane through which pure water and not the salts will pass. The saltwater must be pressurised to approximately 25 bar, which makes it operationally expensive to produce large quantities of fresh water by this method.

stereospecific reaction    →   stereospecifična reakcija

Stereospecific reactions are reactions that proceed predominantly to a single stereoisomeric product out. All metabolic conversions involving chiral molecules are stereospecific.

terminal reaction    →   terminalna reakcija

Terminal reaction is a reaction that ends a cycle or chain of other chemical reactions.

zero-order reaction    →   reakcija nultog reda

Zero-order reaction is a reaction for which the rate of reaction is independent of the concentration of reactants.

photochemical reaction    →   fotokemijska reakcija

Photochemical reactions are those reactions which are conducted under the influence of light that is under the influence of ultraviolet, visible and infrared part of the light spectrum. Some systems can be influenced only by radiation that is absorbed by that system. Photochemical reactions are for example photosynthesis, creation of photography, generation of phosgene, creation of hydrochloride etc.

redox reaction    →   redoks-reakcija

Redox reaction is an oxidation-reduction reaction is a reaction in which one or more electrons are transferred. When an atom, ion, or molecule loses one or more electrons, it is oxidised. When an atom, ion, or molecule gains one or more electrons, it is reduced.

reversible process    →   reverzibilan proces

Reversible process or reaction is those that can be reversed by an infinitesimally small change in conditions. For example, ice and water coexist at 101 325 Pa and 0 °C; a very slight temperature increase causes the ice to melt; a tiny temperature decrease causes the water to freeze. Melting or freezing under these conditions can be considered reversible.