Math & Science ⇒ mhchem | Retain chemical State Symbol

[ghostanime2001]

How to retain the formatting of the gaseous symbol from normal water style to cancel water style ? I just want to show the cancellation of the water compound except the physical state.

MWE:

Code: Select all

\documentclass{article} 
\usepackage{cancel}
\usepackage[version=3]{mhchem}
\begin{document}
\noindent Normal water style: \ce{H2O_{(g)}} \\
Cancel water style: \ce{\cancel{\ce{H2O}}_{(g)}}
\end{document}

[Stefan Kottwitz]

You could add a \ce for the subscript

Code: Select all

\ce{\cancel{\ce{H2O}}_\ce{(g)}}

Stefan

[ghostanime2001]

The depth of the subscript changes is there a way to have it remain absolutely unchanged?

[cgnieder]

mhchem usually requires a space after a command to return to upright font. Including chemmacros' possibilities this gives you several solutions:

Code: Select all

\documentclass{article}

\usepackage{cancel}
\usepackage[method=mhchem]{chemmacros}

\begin{document}

\noindent Normal water style: \ce{H2O_{(g)}} \\
cancelled wrong: \ce{\cancel{\ce{H2O}}_{(g)}} \\
cancelled with \verb=\ce=: \ce{\cancel{\ce{H2O}}_\ce{(g)}} \\ % Stefan's suggestion
cancelled with space: \ce{\cancel{\ce{H2O}} _{(g)}}

Or the chemmacros solution:\chemsetup[phases]{pos=sub}
% setup needed with most recent version of chemmacros (v3.0d)

\noindent Normal water style: \ce{H2O\gas} \\
Cancel water style: \ce{\cancel{\ce{H2O}}\gas}

\end{document}

retain_state.png (22.87 KiB) Viewed 4567 times

Regards