Why do we always represent only the hydrogen evolution?
Answers
Answered by
0
Hydrogen evolution is an output that is relatively easy to measure because it can be detected by changes in pressure or displacement (volume), or by mass spectrometry. The oxidation of metals (or reduction of oxygen) conversely is much harder to measure in real time. Where a corrosion rate of a metal is to be determined then it is much easier to study the hydrogen evolved and then convert those numbers back to mg/m^2/y. It is also particularly useful for passive metals, such as aluminium or zirconium, as a small evolution of hydrogen will generate a pressure change that is quite significant compared with its mass, so even a very slow reaction can be measured over a sensible timescale. Hope this helps......❤❤
Similar questions