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Topic: determining concentration by spectrophotometry expt  (Read 1774 times)

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Offline zweihound

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determining concentration by spectrophotometry expt
« on: January 16, 2012, 11:12:03 PM »
We did an experiment for spectrophotometry wherein we prepared stock solutions of FeCl3 and KSCN, both are 15mL 1.0M and are diluted up to 100ml with HCl. 5 solutions with different volumes from stock solutions were prepared.  Spectrophotometer was then used to measure the absorbance of solutions. Is there a significance of having an acid to dilute the solutions? would the results be different if we dilute the solutions with water?
thanks in advance

Offline Borek

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Re: determining concentration by spectrophotometry expt
« Reply #1 on: January 17, 2012, 03:10:16 AM »
Do you know Ksp for Fe(OH)3?
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