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CHM 124 Lecture Notes - Lecture 12: Styrene, Nitration, Ethylbenzene

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amaranthtoad188
7 Dec 2017
School
URI
Department
Chemistry
Course
CHM 124
Professor
Shahla Yekta

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Document Summary

This page looks at the names of some simple aromatic compounds. An aromatic compound is one which contains a benzene ring. It assumes that you are reasonably confident about naming compounds containing chains of carbon atoms (aliphatic compounds). Note: if you aren"t sure about naming aliphatic compounds follow this link before you go on. Naming aromatic compounds isn"t quite so straightforward as naming chain compounds. Often, more than one name is acceptable and it"s not uncommon to find the old names still in use as well. All aromatic compounds are based on benzene, c6h6, which has a ring of six carbon atoms and has the symbol: Each corner of the hexagon has a carbon atom with a hydrogen attached. Note: if you don"t understand this structure, it is explained in full in two pages on the structure of benzene elsewhere in this site. Following this link could well take you some time!

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Related Questions

1.Structural isomer refers to organic compound that have the same molecular formula but different structure (bonding pattern is different). This problem is designed to guide you to explore structure isomer.

(a)Go ahead and write Lewis structure for butane (C4H10). You may draw four C atoms connect straight as like in train.

(b)In the above structure, four C atoms are connected straight in a line. If you move one C atom to the side (like 3 C atoms in a line, one connected to the middle C atom), after you supply all the H atoms to make all the C atoms saturated with 4-bonds each. Will the molecular formula for your structure drawn be different from butane?

( c) Structures you obtained in (a) and (b) are an example of structural isomers. What kind of name we can give to structure in (b) so we can differentiate it from structure in (a)?

2.Alkane is the basic building block of organic compound. We often write alkane chain as a group R. On this basic chain, we can add different functional group, like –OH for alcohol, -COOH for carboxylic acid.

(a)Methanol refers to CH3OH. Ethanol refers to CH3CH2OH. Draw the Lewis structure for these two compounds.

(b) If you have a straight alkane chain, where does –OH group can be attached? How do you name it so you can know where –OH group is attached?

3. Give the Lewis structure for CH3COOH. Give its systematic name and common name.

4. Ester refers to two alkane chains connected through a single O atom. Write the Lewis structure for this simplest kind of ester: CH3OCH3. Find its name and some common use.

5. Benzene molecular formula is C6H6. The six carbon atoms are connected to form a ring (hexagon). Draw the Lewis structure for C6H6. Do you think the six bond lengths between C-C atoms should be same or not according to your drawn Lewis structure?