Thursday, June 9, 2011

Stoichiometry trix

Limiting reagent: NOT nec. species in smallest amount, but one that is CONSUMED FIRST

***pay attention to consumption behavior, not initial quantities!

grams1 à moles à [stoich REAC/PROD] à grams2

1) BALANCE the equation!!!

2) Do flow chart with ONE of the products--doesn't matter which, just pick one and STICK to it for the sake of comparison!!

3) Less gram #2 value is LR

http://www.chem.tamu.edu/class/majors/tutorialnotefiles/limiting.htm

****calculate number of MOLES (without stoich. numbers) first...

FONClBrISCH (most electroneg to least electroneg)

- sum of oxidation numbers must equal overall charge (indicates what the atom is doing with its valence electrons when it forms a compound)

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