How many isomeric hexanes exist




















The first ten prefixes should be memorized, because these alkane names from the basis for naming many other organic compounds. Pentane, C 5 H 12 , has three chain isomers. If you think you can find any others, they are simply twisted versions of the ones below. If in doubt make some models. Draw all of the isomers for C 6 H 14 O that contain a 6 carbon chain and an alcohol -OH functional group. Draw all possible isomers for C 6 H 14 There are five total.

The top structure is when it is a 6 carbon chain. The middle row contains the 5 carbon chained isomers with branching at the 2 nd and 3 rd carbon. The bottom row contains the two 4 carbon chain isomers that can be drawn.

The first structure is when an alcohol comes off the first carbon. The second structure is when the alcohol is coming off the central carbon. The third structure is the only possible ether form of C 3 H 8.

Draw all possible isomers for C 4 H 8 O 2 that contain a carboxylic acid. Draw all possible isomers for C 3 H 9 N and indicate whether each amine is primary, secondary, or tertiary. The first and second structures are primary amines. The third structure is a secondary amine. The last structure is a tertiary amine. Indicate whether each of the following sets are constitutional isomers, the same compound, or different compounds.

Draw the 5 constitutional isomers of C 7 H 16 of the 9 total isomers possible that have 5 carbons as the longest carbon chain length. The 5 constitutional isomers with a 5 carbon chain length are shown above. Since there needs to be 7 carbons total, the 2 extra carbons are added as substituents.

From left to right, the methyl group substitution pattern is 2,2, 2,3, 2,4, and 3,3, and the last one on right has a 3-ethyl substituent. The other 4 possible constitutional isomers with different length carbon chains are shown below. Steven Farmer Sonoma State University. Key Terms Make certain that you can define, and use in context, the key terms below. Study Notes A series of compounds in which successive members differ from one another by a CH 2 unit is called a homologous series.

It is believed that this reacts with the amino group of the side chain of lysine residues in proteins, causing cross-linking and a loss of protein function. The effects of hexane poisoning in humans are uncertain. In , n-hexane was included in the list of chemicals on the Toxic Release Inventory.

In the latter part of the 20th and early part of the 21st centuries, a number of explosions have been attributed to the combustion of hexane gas. In , the U. Environmental Protection Agency issued regulations on the control of emissions of hexane gas due to its potential carcinogenic properties and environmental concerns. Home Hexane C6H Hexane C6H A it carries three positive charges B it has a pyramidal configuration C it has a trigonal planar configuration D it possesses three electron-donating substituent groups.

A achiral B optically active C racemic D a meso compound. A optically active B racemic C a meso compound D chiral. Which of the following is that isomer? A 5,5-dibromohexene B 2,5-dibromohexene C 2,2-dibromohexene D 2,3-dibromohexene.

A 1-methylcyclohexanol B cis methylcyclohexane-1,2-diol C cis methylcyclohexanol D trans methylcyclohexanol. However, these isomers give different C 4 H 6 Br 4 products with excess bromine. What are these isomeric hydrocarbons? A cyclobutene and methylenecyclopropane B 1,2-butadiene and 1,3-butadiene C 1-butyne and 2-butyne D 2-butyne and cyclobutene. Which of the following isomeric pairs correspond to this evidence? A cyclopentene and 1-pentyne B cyclopentene and 1-methylcyclobutene C 1-methylcyclobutene and 3-methylcyclobutene D cyclopentene and 3-methylcyclobutene.

A all the carbons are sp 2 hybridized, so there is considerable angle strain. C The cyclic overlap of bonding orbitals results in anti-aromaticity destabilization.

D The five C-C bonds have eclipsing strain. A Pt catalyst and H 2. B Lindlar's Pd catalyst and H 2. C Na in liquid NH 3. Which of the following is the other isomer? A 1-bromohexene. B 6-bromohexene. C 1-bromohexene.

D 2-bromohexene. Acid catalyzed hydration with a HgSO 4 catalyst generates a single C 6 H 12 O ketone, and pemanganate oxidation yields a C 5 H 10 O 2 carboxylic acid This compound is most likely which of the following? A cyclohexene. B methylenecyclopentane. C 1-hexyne. D 3-hexyne.



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