MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Chemistry
5.310 DATA SUMMARY SHEET Fall 2005
Student name: ________________ TA name: _________________
Group: A B C D (Please circle) Section: MW / TR (Please circle)
EXPERIMENT 1: UNKNOWN AMINO ACID
Unknown number Experimental Average equivalent Identity of the
melting point of the weight of the amino acid
derivative derivative
Crude: 1st try:
Recrystallized: 2nd try:
3rd try:
(If you did not identify the unknown on the first try, please comment on any
difficulties on the reverse.)
Yield of derivative Limiting reagent Theoretical yield Percent yield
Crude: *
Recrystallized: **
*Based on limiting reagent. ** Based on crude used in recrystallization.
Titration 1 Titration 2 Titration 3
Calculated
equivalent weight
each titration with
error propagation
(Report additional titrations on reverse.)
reading the buret mass endpoint location
Estimated
uncertainty in
measurement
Average propagated error in equivalent weight: ____________________
95% Confidence limits of mean equivalent weight: ____________________
Concentration of NaOH: _______________
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Chemistry
5.310 DATA SUMMARY SHEET Fall 2005
Student name: ________________ TA name: _________________
Group: A B C D (Please circle) Section: MW / TR (Please circle)
EXPERIMENT 2: FERROCENE
Yield of ferrocene Limiting reagent Theoretical yield Percent yield
from synthesis
Yield of ferrocene after Percent of ferrocene Percent yield pure
sublimation recovered by sublimation ferrocene (based on
(based on mass sublimed) theoretical yield)
Acetylation reaction: time: ____________ temperature: _____________
Crude yield of acetylation reaction: _____________
Observations TLC (including Rf values, solvent systems): Please provide in table
form on the reverse.
Was diacetylferrocene observed? _____________ (Add details to reverse)
Solvent system used for column chromatography: ____________________
Yield of acetyl Limiting reagent in Theoretical yield Percent yield
ferrocene (after the acetylation (assume only (assume only
column) reaction product is product is
acetylferrocene) acetylferrocene)
Mass of unreacted ferrocene recovered by chromatography: ______________
Percent of ferrocene used in acetylation reaction recovered (unreacted) ______
crude sublimed acetylation purified
ferrocene ferrocene product -crude acetylferrocene
melting point
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Chemistry
5.310 DATA SUMMARY SHEET Fall 2005
Student name: ________________ TA name: _________________
Group: A B C D (Please circle) Section: MW / TR (Please circle)
EXPERIMENT 3: ESSENTIAL OILS
Unknown number Identity of Unknown Oil
Pressure on Manometer Temperature predict Temperature predict
limonene distillation carvone distillation
1st fraction 2nd fraction 3rd fraction
Temperature range
Approximate
volume
Pure Pure Oil (before Limonene Carvone
carvone limonene separation) fraction fraction
Refractive
index
-OVER-
Oil (before separation Percent limonene Percent carvone
Gas chromatography
Refractive Index
Limonene fraction Percent limonene Percent carvone
Gas chromatography
Refractive Index
Carvone fraction Percent limonene Percent carvone
Gas chromatography
Refractive Index
Yield of Limiting reagent Theoretical yield Percent yield
semicarbazone
derviative
Melting point Optical rotation Specific rotation
semicarbazone derivative semicarbazone derivative semicarbazone derivative
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Chemistry
5.310 DATA SUMMARY SHEET Fall 2005
Student name: ________________ TA name: _________________
Group: A B C D (Please circle) Section: MW / TR (Please circle)
EXPERIMENT 4: KINETICS
molar absorptivity (ε) ko Z1Z2
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Department of Chemistry
5.310 DATA SUMMARY SHEET Fall 2005
Student name: ________________ TA name: _________________
Group: A B C D (Please circle) Section: MW / TR (Please circle)
EXPERIMENT 5: POTENTIOMETRIC TITRATIONS
Unknown number NaOH HCl H3PO4
concentration concentration concentration
Standardization of NaOH:
Titration 1 Titration 2 Titration 3
Calculated NaOH
concentration for
each titration
reading the buret mass endpoint location
Estimated
uncertainty in
measurement
Average propagated error in NaOH concentration: ____________________
95% Confidence limits of mean NaOH concentration: ___________________
-over-
Potentiometric titrations:
Titration 1 Titration 2 Titration 3
Calculated H3PO4
concentration each
titration
95% Confidence limits of mean H3PO4 concentration: ___________________
Titration 1 Titration 2 Titration 3
Calculated HCl
concentration each
titration
95% Confidence limits of mean HCl concentration: ____________________
Estimation of pK1 Calculation of pK2 Estimation of pK3
Endpoint First Second equivalence
HCl titration equivalence point point H3PO4
H3PO4 titration titration
Volume NaOH
added
pH