The Question is from neet-chemistry classification-of-elements-and-periodicity-in-prop iupac-names, and it was created by the author Mr. S M HUSSAIN

Question

The IUPAC name of $CH_3CH_2OH$ is:

Mr. S M HUSSAIN · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
	**Primary Concept**: IUPAC nomenclature of organic compounds
	**Related Topics**: Alkanes, alcohols, functional groups
	**Prerequisites**: Basic understanding of organic chemistry, carbon chain identification, and functional group naming.
## SOLUTION PATHWAY
**Given Information**:
	The chemical formula is $CH_3CH_2OH$.
	This is an alcohol, indicated by the hydroxyl group (-OH).
**Method & Steps**:
	1. Identify the longest carbon chain: The longest continuous chain contains two carbon atoms.
		Reasoning: The molecule has an ethyl group ($CH_3CH_2-$) attached to the hydroxyl group.
		Formula/Rule: The base name is derived from the alkane with the same number of carbons (ethane for two carbons).
	2. Identify the functional group: The molecule contains a hydroxyl group (-OH), which signifies it's an alcohol.
		Working: Alcohols are named by replacing the '-e' ending of the corresponding alkane with '-ol'.
		Key Point: The position of the hydroxyl group needs to be specified if it's not on the terminal carbon. In this case, it's on the terminal carbon, so no number is needed.
	3. Combine the base name and functional group suffix:
		Result: The name is ethane + -ol = ethanol.
		Verification: Ethanol is the correct IUPAC name for $CH_3CH_2OH$.
## OPTION ANALYSIS
A :x: Methanol ($CH_3OH$) has only one carbon atom.
B ✓: Ethanol ($CH_3CH_2OH$) is the correct name for the given formula.
C :x: Propanol ($CH_3CH_2CH_2OH$) has three carbon atoms.
D :x: Butanol ($CH_3CH_2CH_2CH_2OH$) has four carbon atoms.
## LEARNING AIDS
	**Common Mistakes**:
		1. Incorrectly identifying the longest carbon chain: Carefully examine the structure to find the longest continuous chain of carbons.
			How to avoid: Draw the structure and systematically count the carbon atoms in different chains.
		2. Forgetting to add the '-ol' suffix for alcohols: Remember that alcohols are characterized by the presence of the hydroxyl (-OH) group, and this is reflected in the name.
			How to avoid:  Recognize the -OH functional group and apply the appropriate suffix.
	**Quick Tips**:
		1. Count the carbons in the longest chain to determine the base name (meth-, eth-, prop-, but-, etc.).
		2. Identify the functional group and add the appropriate suffix (-ol for alcohols, -al for aldehydes, -one for ketones, etc.).

Mr. S M HUSSAIN · Answer

Methanol

Mr. S M HUSSAIN · Answer

The correct Option is "Ethanol"

Mr. S M HUSSAIN · Answer

Propanol

Mr. S M HUSSAIN · Answer

Butanol

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