[CHM 111] Formal Lab finding the limiting reactant

Andrew J. Pounds pounds at sandbox.mercer.edu
Tue Sep 15 16:53:15 EDT 2015


Excellent question.  It turns out that the water was in excess -- so it 
does not factor into the determination of the limiting reactant.




On 09/15/2015 01:33 PM,  wrote:
> Good afternoon, I wanted to know how I was to know how many grams of 
> water we collected in the lab. When documenting our data we were to 
> record the mass of aluminum, and the volumes for 1.4M of KOH and 9M of 
> H2SO4, as well as the mass of alum. I have my balanced equation to 
> solve for the limiting reactant however, i'm not sure what the mass of 
> the water in the sample was or how to get it in order to search for 
> the limiting reactant.
> Balanced Equation:
>  2 Al(s) + 2KOH + 4H2SO4 + 22 H2O -> 2 KAl(SO4)2·12H2O + 3H2
>
>

-- 
Andrew J. Pounds, Ph.D.  (pounds_aj at mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627
http://faculty.mercer.edu/pounds_aj

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