Ijobiy katalizator

The substances that change the rate of chemical reactions are called catalysts.

Some catalysts accelerate reactions - positive catalysis or direct catalysis, while others slow down - called negative catalysis. Oxidation of sulphuric acid to nitric acid and positive b. is an example. Examples of adverse catalysis are the decomposition of the reaction of sodium sulfate with the solution of ethanol in the presence of ethyl alcohol or the rate of hydrogen peroxide decomposition in the presence of ammonium sulfate (mass fraction of 0.0001). Negative catalysis is often inhibited, and negative catalysts that reduce reaction rates are called inhibitors (their mechanism of action differs from the effect of catalysts).