Balancing chemical equations just with matrices

[helder7]

Perhaps you have tried to balance chemical equations using traditional methods in school/college. Sometimes this process becomes a bit repetitive/boring and is easy to make small mistakes.

I found on google a pdf explaining how to balance chemical equations on casio calculators without any add-in/program, just using Run-Mat and matrices. The process is fast, reliable and easy. Is also possible balance equations containing charge!

Link to PDF (Spanish) by Carlos Avalos:

Code: Select all

http://www.angelfire.com/scifi2/casio/guias/balanceo_ecua_calc_matriz_cp300_I.pdf

Although it is in Spanish it is easy to understand because it has pictures.

See the exemple below:

Cr2O7{2-} + H{+} + e = Cr{3+} + H2O

Resolution on-calc:


The result is:

1 Cr2O7{2-} + 14 H{+} + 6 e = 2 Cr{3+} + 7 H2O

You can use this method in fx9860, prizm and classpad. Note that in fx9860/prizm the max size of a matrice is 6x6 and ident command is called identity.

Happy balancing!