Which combination of monomers produces a condensation polymer with the repeating unit below?

A.     \({{\text{C}}_{\text{6}}}{{\text{H}}_{\text{5}}}{\text{COOH}}\) and \({\text{HOC}}{{\text{H}}_{\text{2}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{OH}}\)

B.     \({{\text{C}}_{\text{6}}}{{\text{H}}_{\text{5}}}{\text{COOH}}\) and \({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{OH}}\)

C.     \({{\text{C}}_{\text{6}}}{{\text{H}}_{\text{4}}}{{\text{(COOH)}}_{\text{2}}}\)  and \({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{OH}}\)

D.     \({{\text{C}}_{\text{6}}}{{\text{H}}_{\text{4}}}{{\text{(COOH)}}_{\text{2}}}\) and \({\text{HOC}}{{\text{H}}_{\text{2}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{OH}}\)

D

Which two compounds can form a polyester?

B

Which process can produce a polyester?

A.     Addition polymerization of a dicarboxylic acid

B.     Condensation polymerization of a diol and a dicarboxylic acid

C.     Addition polymerization of a diol and dicarboxylic acid

D.     Condensation polymerization of a dicarboxylic acid

B

Which pairs of compounds can react together to undergo condensation polymerization reactions?

I.      \({\text{HOOC–}}{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{4}}}{\text{–COOH and }}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}{\text{OH}}\)

II.     \({{\text{H}}_{\text{2}}}{\text{N–(C}}{{\text{H}}_{\text{2}}}{{\text{)}}_{\text{6}}}{\text{–N}}{{\text{H}}_{\text{2}}}{\text{ and HOOC–(C}}{{\text{H}}_{\text{2}}}{{\text{)}}_{\text{4}}}{\text{–COOH}}\)

III.     \({{\text{H}}_{\text{2}}}{\text{N–C}}{{\text{H}}_{\text{2}}}{\text{–COOH and }}{{\text{H}}_{\text{2}}}{\text{N–CH(C}}{{\text{H}}_{\text{3}}}{\text{)–COOH}}\)

A.     I and II only

B.     I and III only

C.     II and III only

D.     I, II and III

C