11.8. Polymers
A subsection of Chemistry, 0620, through 11. Organic chemistry
Listing 10 of 208 questions
Carboxylicacids can be converted to esters. Name the ester formed when butanoicacid, CH3CH2CH2COOH, reacts with ethanol, CH3CH2OH. Identify the other product formed in this reaction. Deduce the empirical formula of the ester formed. PET is a polyester. Part of the structure of PET is shown in Fig.6.1. C O C O C O O O C O O O Circle one repeat unit of this polymer. Draw the structures of the monomers which make up PET. Draw the functional groups using displayed formulae.  State the type of polymerisation used in making PET. 
0620_s23_qp_42
THEORY
2023
Paper 4, Variant 2
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This question is about organic compounds. Propane and chlorine react at room temperature. An equation for the reaction is shown. C3H8 + Cl 2 → C3H7Cl + HCl State the condition required for this reaction. Draw the displayed formulae of two structural isomers with the formula C3H7Cl.  Alkenes are a homologous series of hydrocarbons. State two characteristics that all members of the same homologous series have in common.  Addition polymers are made from alkenes. Complete Fig.7.1 to show one repeat unit of the addition polymer formed from but-2-ene. C C  A repeat unit of a condensation polymer is shown in Fig.7.2. The polymer is made from two monomers. C O O CH2 C CH2CH2 O O Draw the structures of the monomers used to produce the polymer in Fig.7.2.  Name the type of condensation polymer in Fig.7.2. Name the two homologous series to which the monomers in belong.  
0620_s23_qp_43
THEORY
2023
Paper 4, Variant 3
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Questions Discovered
208