pentoxide [pen-tok-sahyd] ExamplesWord Origin noun Chemistry.
- an oxide containing five atoms of oxygen, as phosphorus pentoxide, P2O5.
Origin of pentoxide 1860–65; pent- + oxide Examples from the Web for pentoxide Historical Examples of pentoxide
It is only known in solution; evaporation of the solution yields the pentoxide.
It burns readily in air, and is converted into the pentoxide when fused with acid potassium sulphate.
Columbium pentafluoride, CbF5, is obtained when the pentoxide is dissolved in hydrofluoric acid.
The oxyfluoride, CbOF3, results when a mixture of the pentoxide and fluorspar is heated in a current of hydrochloric acid.
It burns when heated in air, forming the pentoxide and sulphur dioxide.
British Dictionary definitions for pentoxide pentoxide noun
- an oxide of an element with five atoms of oxygen per molecule