14. Hydrocarbons
A section of Chemistry, 9701
Listing 10 of 313 questions
shows two reactions of ethanedioic acid, HOOCCOOH. an excess of SOCl 2 G 2CO2 + H2O HOOCCOOH Draw the organic product G in the box in . In , SOCl 2 is given as the reagent that reacts with HOOCCOOH to produce G. Identify a different reagent that also reacts with HOOCCOOH to produce G. Identify two different reagents that oxidise HOOCCOOH to form carbon dioxide and water. HOOCCOOH ionises as shown. HOOCCOOH HOOCCOO– + H+ HOOCCOOH is a much stronger acid than methanoic acid, HCOOH. Suggest an explanation for this difference in acidity. Benzene-1,4-dicarboxylic acid, HOOCC6H4COOH, can be made from benzene, C6H6, in two steps as shown in . J step 1 step 2 HOOC COOH benzene-1,4-dicarboxylic acid Suggest the identity of J by drawing its structure in the box in . Identify the reagents and conditions for step 1 and step 2. step 1 step 2 Draw the structure of exactly one repeat unit of the polymer formed when benzene-1,4-dicarboxylic acid reacts with ethane-1,2-diol, HOCH2CH2OH. The linkage formed between the monomers should be shown fully displayed. State the type of polymerisation that occurs when benzene-1,4-dicarboxylic acid reacts with ethane-1,2-diol and name the linkage formed between the monomers. type of polymerisation linkage
9701_w24_qp_42
THEORY
2024
Paper 4, Variant 2
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313