CHM 349 FINAL EXAM QUESTIONS AND ANSWERS
100% VERIFIED
Not more that ____ should pass without updating your narrative while you are performing
experiments in organic lab. - ANSWER 10 minutes
2. Which source of information below is the most comprehensive.
a) CRC Handbook
b) Aldrich Chemical Catalog
c) Handbook of Data on Organic Compounds
d) Scifinder - ANSWER Scifinder
4. Which of the following is/are true concerning proper usage of a laboratory notebook for
this class?
I. All entries should be made in ink.
II. Pages should not be skipped.
, III. A single line should be drawn through mistakes. - ANSWER All are true
The best distillation method for the purification of a liquid that boils at 300 C at atmospheric
pressure? - ANSWER Vacuum Distillation
Column chromatography is primarily used to .... - ANSWER Purify a compound
The first step in the mechanism of the acetylation of ferrocene? - ANSWER Protonation of the
carbonyl oxygen of the anhydride
How does polarity effect the movement up a TLC plate? - ANSWER The less polar the more it
will move up the TLC plate
Describe the process of purifying a compound by recrystallization: - ANSWER Dissolve the
compound in a minimal amount of hot solvent, cool in an ice bath until crystals form, and
remove solvent by filtration.
The most important feature of a fractional distillation is: - ANSWER Can separate low boiling
compounds with similar boiling points
Sodium sulfate and magnesium sulfate are both used as drying agents in organic chemistry.
Does the hydration alter the chemical formula of these compounds? - ANSWER No,
100% VERIFIED
Not more that ____ should pass without updating your narrative while you are performing
experiments in organic lab. - ANSWER 10 minutes
2. Which source of information below is the most comprehensive.
a) CRC Handbook
b) Aldrich Chemical Catalog
c) Handbook of Data on Organic Compounds
d) Scifinder - ANSWER Scifinder
4. Which of the following is/are true concerning proper usage of a laboratory notebook for
this class?
I. All entries should be made in ink.
II. Pages should not be skipped.
, III. A single line should be drawn through mistakes. - ANSWER All are true
The best distillation method for the purification of a liquid that boils at 300 C at atmospheric
pressure? - ANSWER Vacuum Distillation
Column chromatography is primarily used to .... - ANSWER Purify a compound
The first step in the mechanism of the acetylation of ferrocene? - ANSWER Protonation of the
carbonyl oxygen of the anhydride
How does polarity effect the movement up a TLC plate? - ANSWER The less polar the more it
will move up the TLC plate
Describe the process of purifying a compound by recrystallization: - ANSWER Dissolve the
compound in a minimal amount of hot solvent, cool in an ice bath until crystals form, and
remove solvent by filtration.
The most important feature of a fractional distillation is: - ANSWER Can separate low boiling
compounds with similar boiling points
Sodium sulfate and magnesium sulfate are both used as drying agents in organic chemistry.
Does the hydration alter the chemical formula of these compounds? - ANSWER No,
