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Posted: **Wed Apr 27, 2022 6:23 am**

: Question 2 Benzene Is Sometimes Represented As Structure X Shown Below Called A Kekule Structure After The Chemist Who 1 (28.11 KiB) Viewed 46 times

: Question 2 Benzene Is Sometimes Represented As Structure X Shown Below Called A Kekule Structure After The Chemist Who 2 (32.07 KiB) Viewed 46 times

: Question 2 Benzene Is Sometimes Represented As Structure X Shown Below Called A Kekule Structure After The Chemist Who 3 (31.17 KiB) Viewed 46 times

Question 2 Benzene is sometimes represented as Structure X, shown below, called a Kekulé structure after the chemist who suggested it. Structure X (a) What structural feature of benzene shows that Structure X is not an accurate representation? (1) Explain the difference in the arrangement of the electrons between benzene and Structure X. (2)
Question 3 The compound benzophenone is used as a sunscreen. It can be prepared from benzene, in the presence of aluminium chloride by the following reaction. Q3 ÇOCI + HCI QЗа benzene + compound A benzophenone Complete the diagram below by showing the displayed formula of the -COCI group in compound A. (1) Q3b Classify the type and mechanism of the reaction between benzene and compound A. (1) Give the names of the two chemists associated with the type of reaction described in (b)(ii). Q3c (1)
Question 3 Give the mechanism for the reaction between benzene and compound A in the presence of an aluminium chloride catalyst. Start by showing the equation for the generation of the species which then attacks the benzene ring. COCI | + + HCI benzene + compound A benzophenone