Chemistry · Oct / Nov 2022 · Paper 42 · Question 6
0620
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The question as text
A carboxylic acid Y has the structure shown. H H C O O
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6(a)[1]
CnH2n+1COOH
6(b)[1]
methanoic acid
6(c)[1]
CH2O2
6(d)[3]
M1 all single bonding dot and cross pairs correct (1)
M2 double C=O bond dot and cross pairs are correct (1)
M3 four non-bonding cross electrons on each O atom (1)
6(e)(i)[3]
M1 propyl methanoate (1)
M2 ester linkage with all atoms and all bonds (1)
M3 correct structure of propyl methanoate (1)
6(e)(ii)[1]
water
6(e)(iii)[2]
M1 methyl propanoate (1)
M2 butanoic acid (1)
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