What is the difference between n-pentane and iso-pentane?

Answer 1

Definitions of n-Pentane:
-CAS Number: 109-66-0. A clear, colorless solution with a mild, gasoline-like odor. It is used in natural gas, lighter fluid, blowtorch fuels, and aerosol propellants. Chemical formula = C5H12. Molecular weight = 72.15 g/mol.
-Pentane also known as amyl hydride or skellysolve is an alkane hydrocarbon with the chemical formula CH3(CH2)3CH3. 3 isomers exist for pentane: n-pentane (linear molecule), isopentane (2-methylbutane) and neopentane which is formally 2,2-dimethylpropane.

Definitions of Isopentane:
Isopentane, also called methylbutane or 2-methylbutane, is an organic chemical compound which is one of the three pentane isomers. Isopentane is a branched-chain alkane with five carbon atoms. Isopentane is an extremely volatile and extremely flammable liquid at room temperature and pressure. The normal boiling point is just a few degrees above room temperature and isopentane will readily boil and evaporate away on a warm day.

Answer 2

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Because the "n" stands for natural or normal if what I remember is right, for example n-butane's structure is C-C-C-C with all other valence electrons attached to hydrogen atoms (I declined to show them because with yahoo it is difficult to show structures without spaces.) n-pentane would be C-C-C-C-C or more accurately C/C\C/C\C as the covalent carbon bonds are not perfectly straight but are instead angled. And n-Hexane would be C-C-C-C-C-C. And what keerthan said about the iso, neo, etc prefixes is no longer proper nomenclature according to the IUPAC nomenclature system, which is the naming system used by almost all if not every chemist. the proper system is using the prefixes methyl-, ethyl-, butyl-, etc. The method of naming the hydrocarbon or organic molecule is to find the longest single carbon chain and name it according to how many carbon atoms are in the chain, Then you number the carbon atoms so that any additional carbon atoms on the sides of the chain have the lowest possible number. Then you name the side chain according to how many carbon atoms are in that also, for example if the side chain was CH2-CH3 it would be called ethyl. then you write the number of the carbon atom its attached to and then the name of the side chain and then finally the main chain. for example the isomer of butane which is commonly called Isobutane by non-chemically acknowledged people is correctly called 2-methyl-propane and neopentane is actually 2,2-Dimethyl-Propane.

Answer 3

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RE:
What is the difference between n-pentane and iso-pentane?

Answer 4

N-pentane Structural Formula

Answer 5

Molecular Weight Of N-pentane

Answer 6

n-pentane is a straight chain 5- carbon compound while iso-pentane is a branched isomer of n-pentane.

Answer 7

Look at this page, it'll be easier if you see it for yourself. These compounds are structural isomers of each other.

http://upload.wikimedia.org/wikipedia/commons/f/f3/Pentane_isomers.PNG

Answer 8

n-pentane
CH3-CH2-CH2-CH2-CH3
iso pentane
CH3-CH-CH2-CH2-CH3
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CH3