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-includes summary of steps to follow in naming aromatic compounds and questions. (Just click on "Source" to take the quiz).

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Fill-in the blank with the correct name for each of the following aromatic compounds.

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-explanation on the formation of pi-bonds in Benzene

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eCHEM 1A: Online General Chemistry College of Chemistry, University of California, Berkeley http://chemistry.berkeley.edu/echem1a Curriculum and ChemQuizzes developed by Dr. Mark Kubinec and Professor Alexander Pines Chemical Demonstrations by Lonnie Martin Video Production by Jon Schainker and Scott Vento Developed with the support of The Camille & Henry Dreyfus Foundation

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Exam-type question about Kekule's structure

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Exam-type question about Kekule's structure

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-includes model answers based on the mark scheme

Discuss the reasons why Kekule's structure is considered to be a false representation of Benzene's structure. (3 marks)

- The enthalpy of hydrogenation of Benzene is less exothermic than expected.

-The bond length in Benzene is longer than C=C and shorter than C-C.

-Benzene does not take part in electrophilic addition.

-Benzene does not decolourise Bromine.

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Exam-type question about the delocalised model of Benzene

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Exam-type question about the delocalised model of Benzene

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-includes model answers based on the mark scheme

1) Discuss the features of the delocalised model of benzene. You can include drawings. (5 marks)

Model Answer:

-Benzene is a CYCLIC HYDROCARBON with six carbon atoms and six hydrogen atoms

-The six carbon atoms are arranged in a PLANAR HEXAGONAL RING.

-The shape around each carbon atom is TRIGONAL PLANAR with BOND ANGLE OF 120 DEGREES.

-Each carbon atoms has three outer-shell electrons bonded to two carbon atoms and one hydrogen atom. These are called SIGMA BONDS.

-This leaves a fourth outer-shell electron in the p-orbital to overlap with the other electron in the p-orbital on either side. This creates a system of PI-BONDS that SPREAD over the ring of electron density above and below the ring.

-The electrons are said to be DELOCALISED.

-Illustrations:

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-includes background information on the structure of Benzene and how to correctly draw aromatic compounds.

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Explains the names of the simple aromatic compounds (containing benzene rings) required at A' level

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-lesson on how to draw and name Benzene derivatives

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Naming benzene derivatives introduction | Aromatic Compounds | Organic chemistry | Khan Academy

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Naming benzene derivatives introduction. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/naming-aromatic/v/naming-benzene-derivatives?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them.

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-problems with the structure and how it differs from the actual structure of benzene

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bonding in benzene - the Kekulé structure

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A description of the Kekulé structure for benzene and the reasons (including hydrogenation energies) why it isn't satisfactory.