For example, imagine a hydrogen-oxygen fuel cell. So it can't be zeroth order. So it's falling off exponentially. That's 1st order. But if the mole fractions of NO and ozone found at sea level were transported to the stratosphere, where the pressure is only 0.01 that of sea level, their concentrations would definitely not be the same as at sea level.
Molecular chlorine is made by the electrolysis of seawater.
So it too is not spontaneous . We can't tell what to assign to which. Last modified 1 May 2000.