Chemistry Lab: Ferrate Both Weeks College General Chemistry Assignment

692 words - 3 pages

Experiment 6: Ferrate
Mason Ostrowski
Alexis, Marcello
April 3, 2018
Hilda Posada
Section 3
The procedure was followed as written:
Week 1/2
1. Calibrate spectrometer with DI water. Follow instructions for calibration from part 2.
2. Measure 1.5mL of DTZA in graduated cylinder
3. Measure 3 mL of ferrate in another graduated cylinder
4. Transfer ferrate to graduated cylinder with DTZA and immediately transfer to cuvette.
5. Shake cuvette for 5 min the place in spectrometer.
6. Record absorbance at every 30 seconds for 5 minutes
7. Discard ferrate and DTZA solution
8. Repeat process for trial 2 using same amount of ferrate and 3 mL of DTZA. If there is time for trial 3, use 4.5 mL of DTZA.
Table 1: Data Values to Calculate the Concentration of Ferrate
Absorbance at 510 nm
Diluted Conc. of Ferrate (M)
Stock Concentration of Ferrate (M)
Trial 1
Trial 2
Table 2: Percent Yield of Ferrate Produced
Actual Yield of Ferrate Concentration (M)
Theoretical Yield of Ferrate Concentration (M)
Percent Yield
Sample Calculations:
Theoretical yield:
Actual yield = stock concentration (T 1) + stock concentration (T 2) /2
Percent yield= actual yield/theoretical * 100%
Table 3: Performing the Reaction between Ferrate and Diatrizoic Acid (DTZA) (Week 1)
Time (sec)
1st Reaction
Absorbance at 509.5 nm
Time (sec)
2nd Reaction
Absorbance at 509.5 nm
Time (sec)
Table for additional reaction if needed
Reaction Absorbance at 510 nm
Figure 1: 1st Reaction between Ferrate and 0.040 M DTZA (Week 1)
Figure 2: 2nd Reaction between Ferrate and 0.040 M DTZA (Week 1)
Table 4: Performing the Reaction between Ferrate and Diatrizoic Acid (DTZA) (Week 2)
Time (sec)
1st Reaction
Absorbance at 510 nm
Time (sec)
2nd Reaction
Absorbance at 510 nm
Time (sec)
Table for...

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