Polyethylene terephthalate (PET) is used to make synthetic fibers, such as Dacron, thin films, such as Mylar, and bottles for carbonated beverages.PET is produced from ethylene glycol and either of two monomers, depending on whether the reaction proceeds by dehydration- condensation or by displacement. Write equations for the two syntheses. (Hint: The displacement is reversed by adding methanol to PET at high T and P.)