In: Chemistry
Set IHMR A |
Relative Concentration Methyl Red |
Absorbance (a.u.) at 425 nm |
---|---|---|
A0 | 1.00 | 0.094 |
A1 | 0.75 | 0.058 |
A2 | 0.50 | 0.041 |
A3 | 0.25 | 0.030 |
Set IIHMR A |
Relative Concentration Methyl Red |
Absorbance (a.u.) at 520 nm |
---|---|---|
A0 | 1.00 | 0.895 |
A1 | 0.75 | 0.806 |
A2 | 0.50 | 0.597 |
A3 | 0.25 | 0.224 |
Set IMR- B |
Relative Concentration Methyl Red |
Absorbance (a.u.) at 425 nm |
---|---|---|
B0 | 1.00 | 0.480 |
B1 | 0.75 | 0.302 |
B2 | 0.50 | 0.243 |
B3 | 0.25 | 0.052 |
Set IIMR- B |
Relative Concentration Methyl Red |
Absorbance (a.u.) at 520 nm |
---|---|---|
B0 | 1.00 | 0.048 |
B1 | 0.75 | 0.033 |
B2 | 0.50 | 0.023 |
B3 | 0.25 | 0.017 |
Based on the data above, calculate the slope of the line of the absorbance vs relative concentration for each for the four data sets (Part III in your lab manual).
Let:
αHMR
IA equal the slope for solutions A0-A3 at 425
mm
αMR-
IB equal the slope for solutions B0-B3 at 425
mm
αHMR
IIA equal the slope for solutions A0-A3 at
520 mm
αMR-
IIB equal the slope for solutions B0-B3 at
520 mm
These α's are the respective Beer's Law constants for HMR and MR- at the 2 wavelengths. Enter below the α's that you determined from your Excel graphs