Combustion of methane; experimental setup and water detection?
My specific question is why I need to cool the U-tube (in which I have my water detection) thoroughly when burning methane. What are the effects of this, and would the water detection fail if the U-tube weren't cooled? The methane gas reacts to form water (and carbon dioxide) anyway, regardless of the temperature, right?
(1 votes)
Loading...
Your combustion gases are hot. The resulting water is gaseous, so you don’t see it.
You only see it when it is condensed and liquid. And this goes much better on a cooled glass tube than on a one that warms up with time due to the combustion gases.
But the steam must condense on the walls.
You can also take watesmo-paier instead, then you don’t need the URohr and the water bath
why water vapor develops as reaction products, why not directly water
Water is water molecules that stick together. In the reaction a hot gas cloud with individual CO2 and H2O molecules is formed, i.e. steam