Question
Asked Dec 20, 2019
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  • The IUPAC name for a carboxylic acid is based on the name of the hydrocarbon with the same number of carbon atoms. The ending-oic is appended, as in ethanoic acid; which is the IUPAC name for the acetic acid. Draw the structure of the following acids.
  1. Methanoic acid
  2. Pentanoic acid
  3. 2-chloro-3-methyldecanoic acid
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Expert Answer

Step 1

The first given compounds is Methanoic acid.

In Methanoic acid, the prefix meth is used to determine the parent chain. It means that longest chain of carbon consist of only one carbon atom. The functional group present in the given compounds is carboxylic acid. The suffix used for carboxylic acid is –oic acid (-COOH). Thus, the structural formula for methanoic acid is shown below.

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Он н methanoic acid

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Step 2

The second given compounds is pentanoic acid.

 

In pentanoic acid, the prefix pent is used to determine the parent chain. It means that longest carbon chain consist of five carbon atoms. The functional group present in the given compounds is carboxylic acid. The suffix used for carboxylic acid is –oic acid. The name suggests that one carboxylic group is attached to the first carbon atom. Thus, the structural formula for pentanoic acid is shown below.

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Н, Н,С. ОН На Н, pentanoic acid

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Step 3

The third given compound is 2-chloro-3-methyldecanoic acid.

 

In 2-chloro-3-methyldecanoic acid, the ‘-dec’ is used to determine the number of carbon atoms present in parent chain. It means that longest carbon chain consist of ten carbon atoms. The functional group present in the given compounds is carboxyl...

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CH3 Н C. Н, Н, „ĊH Он Нс На Н, 2-chloro-3-methyldecanoic acid

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Nomenclature

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