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Here are free add-ins for Microsoft Word, Excel, and PowerPoint that format chemical equations and exponents. To illustrate their use, imagine typing the following line in Word:
Cu2+(aq) + SO42-(aq)
CuSO4*5H2O Heat for 2 hours at 120°C. ΔH = 1E4 J/mol
(I typed -->, which Word automatically converted to
). Leave the cursor in this paragraph (or select just the text to format). Click the
button, which runs the add-in. The line is converted to this:
Cu
2+(aq) + SO
42-(aq)
CuSO
4·5H
2O Heat for 2 hours at 120°C. ΔH = 1 × 10
4 J/mol
Superscripts and subscripts were added; the arrow was replaced with a prettier arrow; and the asterisk was converted to a centered dot to indicate waters of hydration (or radicals). A plus (or minus) sign with space before it is not superscripted. Numbers in the text after the equation were unchanged, except that 1E4 was converted to 1 × 10
4.
In Excel, you could type the following into two cells:
*CH3 + *OH --> CH3OH
2H2(g) + O2(g) --> 2H2O(g) yield: 3.2E8 kg
Select both cells, click the
button, and the lines are converted to these:
·CH3 + ·OH CH3OH
2H2(g) + O2(g) 2H2O(g) yield: 3.2 × 108 kg
(The centered dots are a little small in Arial, which is Excel’s default font on the PC.)
Here are some other examples. Square brackets may be present.
Radicals can be entered.
*CH3 + *OH CH3OH | | ·CH3 + ·OH CH3OH
|
A plus or minus sign before a letter is not treated as a charge.
If more than one digit precedes a charge, the last digit goes with the charge.
A single digit preceding a charge goes with the charge, except for O3.
The program cannot read minds, so check the results. In the last example, CH3- was probably meant to be CH
3-, rather than CH
3-.
These add-ins take a couple of seconds to load the first time they are run; after that, they are quite fast.
The location of the button that runs the formatter can be changed by the user: from the Tools menu, select Customize…, then drag the button to a new location. When the add-in restarts, it will remember the new location.
Word Add-in
To download the Word add-in, click on the appropriate link below with your secondary mouse button (i.e., right-click) (Mac users: hold down the control key,
, and click on the link) and select Save Target As … (Internet Explorer) or S
ave Link As … (Netscape) from the menu.
Word 2007 Chemistry Formatter Last updated March 31, 2007
http://spectrum.troy.edu/~cking/ChemFormat/
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