deletions | additions       diff --git a/Mechanisms_of_mineral_weathering_The__.md b/Mechanisms_of_mineral_weathering_The__.md  index ca6ee16..a01fd24 100644  --- a/Mechanisms_of_mineral_weathering_The__.md  +++ b/Mechanisms_of_mineral_weathering_The__.md 
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$$R=A⋅k⋅(agent)^n$$  where *R* is the dissolution rate, *A* the mineral surface area, *k* the specific rate coefficient, *(agent)* the activity of the weathering agent, and n the reaction order.   An extremely important notice is that, to our knowledge, for all tested weathering agents on all tested primary minerals, the reaction order is between 0.5 and 0.8.   This has major, and counter-intuitive, consequences in understanding the impact of soil solution heterogeneity on soil scale weathering rates, see \citet{Smits_2009} and in the paragraph section  4 of this chapter.