EBK ESSENTIAL ORGANIC CHEMISTRY
3rd Edition
ISBN: 8220100659461
Author: Bruice
Publisher: PEARSON
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Textbook Question
Chapter 15.8, Problem 20P
Explain why, when a small amount of glycerol is added to the reaction mixture of toluene- 2,6–diisocyanate and ethylene glycol during the synthesis of polyurethane foam, a much stiffer foam is obtained.
glycerol
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Date
Unknown o
Hydrated Salt
Lab Sec.
Name
Trial I
Trial 2
1. Mass of fired crucible and lid (g)
2. Mass of fired crucible, lid, and hydrated sah (g)
3. Instructor's approval of flame and apparatus
4. Mass of crucible, lid, and anhydrous salt
Ist mass measurement (g)
2nd mass measurement (g)
3rd mass measurement (g).
Desk No.
Trial 3
48.833 46.808 213.692
51.507 9.359 46,615
50.296 48.211 45.351
50.142 48.146 45.1911
50.103 48.132 45.186
5. Final mass of crucible, lid, and anhydrous salt (g)
50.180 4.13 45.243
Calculations
1. Mass of hydrated salt (g)
2. Mass of anhydrous salt (g)
2.674 2.491 2.9239
1.3479 1.2959 1.5519
3. Mass of water lost (g)
1.32791969 1.322g
4. Percent by mass of volatile water in hydrated salt (%) 49.6% 48% 216.9%
5. Average percent HO in bydrated salt (%H,O)
5. Standard deviation of %H,O
Relative standard deviation of %H,O in hydrated salt (RSD)
how calculations on next page.
48.17%
Data Analysis, B
Data Analysis, C
Data Analysis, D
Experiment 5 89
Considering the irregular electronic configurations we discussed for certain transitionmetals, think about the possibility of silicon (Si) having a [Ne]3s 2 3p 2 configuration vs.[Ne]3s 1 3p 3. Discuss the pros and cons of both configurations. Which one does Si actuallyadopt and why?
(5 Pts) Currently, the last element in the periodic table is number 118, oganesson (Og).
Channel your inner Dimitri Mendeleev and predict element 119’s electronic configuration,
atomic mass, density, and either melting or boiling point. Justify your answers.
Chapter 15 Solutions
EBK ESSENTIAL ORGANIC CHEMISTRY
Ch. 15.2 - Prob. 1PCh. 15.2 - Prob. 2PCh. 15.2 - Prob. 3PCh. 15.2 - Prob. 4PCh. 15.2 - List the following groups of monomers in order...Ch. 15.2 - List the following groups of monomers in order...Ch. 15.2 - Prob. 7PCh. 15.2 - Why does methyl methacrylate not undergo cationic...Ch. 15.2 - Which monomer and which type of initiator would...Ch. 15.2 - Prob. 10P
Ch. 15.2 - Prob. 11PCh. 15.5 - Draw a short segment of gutta-percha.Ch. 15.5 - Prob. 13PCh. 15.6 - Prob. 14PCh. 15.8 - Prob. 15PCh. 15.8 - Prob. 16PCh. 15.8 - Prob. 17PCh. 15.8 - a. Propose a mechanism for the formation of the...Ch. 15.8 - Propose a mechanism for the formation of Melmac.Ch. 15.8 - Explain why, when a small amount of glycerol is...Ch. 15.10 - Prob. 21PCh. 15 - Draw short segments of the polymers obtained from...Ch. 15 - Prob. 23PCh. 15 - Draw the structure of the monomer or monomers used...Ch. 15 - Draw short segments of the polymers obtained from...Ch. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - A particularly strong and rigid polyester used for...Ch. 15 - Prob. 30PCh. 15 - Prob. 31PCh. 15 - Prob. 32PCh. 15 - Prob. 33PCh. 15 - Prob. 34PCh. 15 - Prob. 35PCh. 15 - Delrin (polyoxymethylene) is a tough...
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