# [NTG-context] Typesetting chemical reaction equations

Ville Voipio ville.voipio at kpatents.com
Fri Jan 27 16:52:25 CET 2006

I would need to typeset some rather simple reaction equations. I do not
need the structural capabilities of PPCHTeX, just something simpler. The
thing I am writing has something to do with physical chemistry, so I
need mathematical equations, as well.

Of course, the natural way to do this:

\placeformula
\startformula
\rm
NH_3(g) + H^+(aq.) + Cl^-(aq.) \rightarrow NH_4^+(aq.) + Cl^-(aq.)
\stopformula

This gives rather pleasant-looking results. However, is this the right
(i.e. kosher) way of doing things, or do I run into trouble at some
later point with this? What are you chemists using?

And how do I switch off the equation numbering for the chemical
reactions (I'd like to have the mathematical formulae still numbered)?

TIA,

- Ville