[CHM 112] Lab

[Andrew Pounds]

On 07/15/2015 04:54 PM,  wrote:
> Dr.Pounds,
> The graph that we should bring tomorrow only includes the standards right?
> In the procedure it says that the concentration of [FeSCN2+] is equal to the initial [SCN-], what values do we use??
> Thankyou
>
>

Yes -- you only have a graph for your standards.  You may include your 
blank as one of your standards.

Use the $M_1V_1=M_2V_2$ equation again.   I believe that you used 1, 3, 
and 5 ml of the KSCN.  Therfore use that information, the concentration 
of the KSCN you got out of the fume hood, and the final volume for each 
sample to come up with the concentration.

-- 
Andrew J. Pounds, Ph.D.  (pounds at theochem.mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627

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