3. Dacron is the brand name for the polymer that is made from ethane-1,2-diol and benzene-1,4-dicarboxylic acid. (a) What type of polymer is Dacron? (b) When the two monomers combine, what type of reaction do they undergo and what molecule is eliminated?(c) What is the name for the linkages that join the monomers together?(d) Draw the monomers and the polymer of the reaction to create Dacron. (Use a condensed structural formula in your answer.) HC-C styrene ethane-1,2-diol 101H H-O H дов OH benzene-1.4-dicarboxylic acid.

Given the following organic compound, what type of polymer is being shown in the diagram and how many of those bonds are there? * NH, HO НО. NH NH, polyamide with 2 amide bonds polyester with 2 ester bonds polyamide with 1 amide bond O polyester with 1 ester bond

27) Draw the sequence of reactions by which cis-3-hexene could be prepared from 1- butyne. (Please draw all reactants, intermediates, products, and reaction's conditions) 28) Name the following compound:

Write an equation for each of the following reactions. Use molecular and structural formulas and classify the reaction as combustion, addition, substitution, hydrogenation, or hydration.   (c) Acetylene and oxygen react.    (d) 3-methyl-1-butyne reacts with excess hydrogen.

Which of these polymers is a polyurethane? A) B) HN -NH n C) D ) H3C CH3 N'

1-Propylamine, propan-1-ol, acetic acid, and butane have about the same molar masses. Which would you expect to have the (a) highest boiling point, (b) lowest boiling point, (c) least solubility in water, and (d) least chemical reactivity? Have each member of your group chose a part to answer, andthen discuss with each other why those answers were chosen.

Biphenyl has the following structure.(a) Is biphenyl a (fused) polynuclear aromatic hydrocarbon?

:) Fill in the blanks with the NAME and STRUCTURE of the ORGANIC REACTANT or the NAME and STRUCTURE of the MAJOR ORGANIC PRODUCT in the following reactions:

Draw a representative segment with four repeating units of the polymer prepared from N-vinyl pyrrolidone. H C=CH2 N

Classify each of the following organic reactions as an oxidation reaction, reduction reaction, or both. You may need to refer back to functional groups from Chapter 4 and sketch out an example reactant and product for some of these. (a) alcohol → aldehyde (b) carboxylic acid → alcohol (c) alkene → alkane (hydrogenation) (d) alkene → alkyne (e) alkene → alcohol (hydration)