CHEMISTRY GLOSSARY

homogenic reaction    →   homogena reakcija

Homogenic reactions are those reactions in which products and reactants are in the same phase (aggregate state).

precursor    →   prekursor

Precursor means any chemical reactant which takes part at any stage in the production by whatever method of a toxic chemical. This includes any key component of a binary or multicomponent chemical system. A zymogen (or proenzyme) is an inactive enzyme precursor.

inert electrode    →   inertna elektroda

Inert electrode is an electrode that serves only as a source or sink for electrons without playing a chemical role in the electrode reaction. Precious metals, mercury, and carbon are typically used as inert electrodes. The inert nature of the electrode can sometimes be questioned. While the electrode may not take part in the reaction as a reactant or product, it still can act as an electrocatalyst.

reverse reaction    →   povratna reakcija

Reverse reaction is a reaction in backward directions, reaction (in the reversible reaction) in which original reactants emerge again from a products. It goes from right to left.

second-order reactions    →   reakcije drugog reda

Second-order reaction is a reaction with a rate law that is proportional to either the concentration of a reactant squared, or the product of concentrations of two reactants.

For a general unimolecular reaction,

The reaction rate expression for a second order reaction is

If assumed that the concentration of reactant A is [A]_o at t=0 and [A] at time T, the variables in the rate equation and integrate can be separated. The integrated rate law for a second-order reaction can be easily shown to be

stoichiometric coefficient    →   stehiometrijski koeficijent

Stoichiometric coefficient (ν) is the number appearing before the symbol for each compound in the equation for a chemical reaction. By convention, it is negative for reactants and positive for products.

Stoichiometric coefficients describe the stoichiometry of the chemical reaction.

In this equation, a, b, c and d are called as Stoichiometric coefficients of the A, B, C and D respectively.

theoretical yield    →   teoretski prinos

Theoretical yield is the maximum quantity of a product that could be formed in a chemical reaction if all the limiting reactants reacted to form products (distinguished from actual yield).