The formula for 2-pentanol is C5H12O. However, when you draw the structure, be sure to make sure that the hydroxide branch is on one of the second carbons, because it is 2-pentanol. For example:
H
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H O H H H
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H - C- C - C- C - C - H
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H H H H H The structure could also very likewise be drawn with the hydroxide group going downwards or on the "4th" carbon (this term is incorrect, because the carbon is second from the right and therefore would be called the second carbon oncemore, but for clarity, I termed it the "4th" carbon).
The difference between 2-pentanol and 3-pentanol is the position of the hydroxyl (OH) group on the pentane chain. In 2-pentanol, the hydroxyl group is located on the second carbon of the chain, while in 3-pentanol, it is on the third carbon. This difference in position affects the physical and chemical properties of the two isomers.
The eight structural isomers of a 5-carbon alcohol are: pentanol (n-pentanol), isopentanol (2-methyl-1-butanol), neopentyl alcohol (2,2-dimethyl-1-propanol), tert-pentanol (2-methyl-2-butanol), 1-pentanol, 2-pentanol, 3-pentanol, and 2-methyl-2-butanol.
Complete combustion: C6H13OH + 9O2 → 6CO2 + 7H2O Incomplete combustion: C6H13OH + 6O2 GIVES 6CO + 7H2O http://scienceray.com/biology/ecology/balanced-equations-for-the-combustion-of-alcohols/
The chemical formula for the product of 1-pentanol and acetic acid is C7H14O2. This is because 1-pentanol (C5H12O) reacts with acetic acid (CH3COOH) to form an ester, where the -OH group from 1-pentanol combines with the -COOH group of acetic acid while eliminating a water molecule.
2pentene
Pentanol is an alcohol attached to a five carbon atom chain. Its basic molecular formula is C5H12O. The exact structure will depend on where in the carbon chain the alcohol is attached, as you can have 1-pentanol, 2-pentanol, or 3-pentanol.
There is only one primary alcohol with the molecular formula C5H11OH, which is pentanol.
there are 14 isomers corresponding to the formula C5H12O out of which 6 are ethers and rest all are alcohols and 3 are optically active compounds.
secondaryPentan-3-olsecondaryPentan-2-olsecondary3-Methylbutan-2-ol
single phase
CH3CH2CH2CH(OH)CH3 is 2-pentanol and CH3COOH is ethanoic acid
When sodium bromide is mixed with 2-pentanol, a substitution reaction may occur where bromine from sodium bromide replaces the hydroxyl group in 2-pentanol, resulting in the formation of 2-bromopentane and sodium hydroxide as byproducts. This reaction is a typical example of a nucleophilic substitution reaction.