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5. The monomers terephthalic acid and ethylene glycol are used to make a well-known polyester, at a moderate pressure (~
Posted: Tue May 31, 2022 10:46 pm
by answerhappygod
- 5 The Monomers Terephthalic Acid And Ethylene Glycol Are Used To Make A Well Known Polyester At A Moderate Pressure 1 (43.85 KiB) Viewed 16 times
5. The monomers terephthalic acid and ethylene glycol are used to make a well-known polyester, at a moderate pressure (~ 5.5 bar) and high temperature (260 °C). OH HO HO OH terephthalic acid ethylene glycol a. Provide a chemical equation that shows the synthesis of a polymer using the monomers terephthalic acid and ethylene glycol, and name the polymer produced. (3) b. Assuming the equilibrium constant for the polymerization of terephthalic acid and ethylene glycol is 303, calculate the expected degree of polymerization and extent of reaction if the reaction is carried out in a closed system without the removal of the by-product water. (6) c. To what level must the concentration of water be lowered in order to obtain a number average degree of polymerization of 395 if the initial concentration of carboxyl groups is 2.5 M?