20. Polymerisation
A section of Chemistry, 9701
Listing 10 of 116 questions
Organochlorine compounds can undergo hydrolysis. R–Cl + H2O R–OH + HCl State and explain the relative rates of hydrolysis of the following compounds. CH3CH2Cl CH3COCl C6H5Cl Epibatidine is a naturally occurring organochlorine compound. Cl N epibatidine N H Epibatidine is a weak base. State what is meant by the term weak base. A molecule of epibatidine contains two nitrogen atoms, both of which can act as a base. Epibatidine reacts with HCl . Complete the structure to suggest the product formed in this reaction. Cl N N H  Polyamides, such as nylon-6, can be prepared from a monomer that contains both an amine and an acyl chloride functional group. nylon-6 monomer H2N (CH2)5 C O Cl When the nylon-6 monomer is hydrolysed, bonds are broken and formed. By considering the two steps in the mechanism of the reaction, complete the table by placing one tick () in each row to indicate the types of bonds broken and formed during the mechanism. σ bonds only π bonds only both σ and π bonds bonds broken bonds formed  Draw two repeat units of nylon-6. The amide bond should be shown fully displayed.  An addition polymer made from two different alkene monomers is called a co-polymer. A section of a polyalkene co-polymer is shown. C CH3 Cl C H H H C C2H5 C H C CH3 CH3 Cl C H H Draw the structure of the two alkene monomers which produce this co-polymer.  Explain why polyamides normally biodegrade more readily than polyalkenes. The alkene phenylethene can be prepared from benzene in three steps. step 1 step 3 step 2 O H phenylethene Deduce the identity of compound H and draw its structure in the box. Suggest reagents and conditions for each of the steps 1–3. step 1 step 2 step 3  
9701_s19_qp_41
THEORY
2019
Paper 4, Variant 1
View
Organochlorine compounds can undergo hydrolysis. R–Cl + H2O R–OH + HCl State and explain the relative rates of hydrolysis of the following compounds. CH3CH2Cl CH3COCl C6H5Cl Epibatidine is a naturally occurring organochlorine compound. Cl N epibatidine N H Epibatidine is a weak base. State what is meant by the term weak base. A molecule of epibatidine contains two nitrogen atoms, both of which can act as a base. Epibatidine reacts with HCl . Complete the structure to suggest the product formed in this reaction. Cl N N H  Polyamides, such as nylon-6, can be prepared from a monomer that contains both an amine and an acyl chloride functional group. nylon-6 monomer H2N (CH2)5 C O Cl When the nylon-6 monomer is hydrolysed, bonds are broken and formed. By considering the two steps in the mechanism of the reaction, complete the table by placing one tick () in each row to indicate the types of bonds broken and formed during the mechanism. σ bonds only π bonds only both σ and π bonds bonds broken bonds formed  Draw two repeat units of nylon-6. The amide bond should be shown fully displayed.  An addition polymer made from two different alkene monomers is called a co-polymer. A section of a polyalkene co-polymer is shown. C CH3 Cl C H H H C C2H5 C H C CH3 CH3 Cl C H H Draw the structure of the two alkene monomers which produce this co-polymer.  Explain why polyamides normally biodegrade more readily than polyalkenes. The alkene phenylethene can be prepared from benzene in three steps. step 1 step 3 step 2 O H phenylethene Deduce the identity of compound H and draw its structure in the box. Suggest reagents and conditions for each of the steps 1–3. step 1 step 2 step 3  
9701_s19_qp_43
THEORY
2019
Paper 4, Variant 3
View
Questions Discovered
116