# Difference between revisions of "User:Allison K. Alix/Notebook/CHEM-581/2012/10/26"

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## Objective

• Take UV-Vis spectra of mixtures of previously prepared salt solutions and porphyrin solution in 1:1 ratio at the same concentrations (50micM)
• Take IR spectra of films

## Description

1. Finish preparing the following sulfate solutions
1. 10mL 50 μM H2SO4
2. 10mL 50 μM Fe2(SO4)3
2. Begin taking IR measurements of all films synthesized thus far

## Data

Preparation of 50μM H2SO4

$\displaystyle \frac {50 x 10^-3 mol} {L} \times \frac {98.07 g} {mol} \times 10mL \times \frac {1L} {1000 mL} \times \frac {1mL} {1.84 g} = 0.0266mL$

0.0266mL = 26.65μL

Preparation of 50μM Fe2(SO4)3

$\displaystyle \frac {278.01 g} {mol} \times \frac {50 x 10^-3 mol} {L} \times \frac {1 L} {1000 mL} \times 10mL = 0.138 g$

0.138 g Fe2(SO4 in 10mL H2O to get 50mM. Dilute to 50μM by using 0.01 mL (10μL) in 9.99mL (9990μL) H2O

## Notes

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