Write the name and structure of an alcohol with four carbon atoms in its molecule.
Write the name and structure of an alcohol with four carbon atoms in its molecule.
The alcohol with four carbon atoms in its molecule is butanol (specifically, butan-1-ol).
Its molecular formula is (or ).
Structure:
``
H H H H
H - C - C - C - C - O - H
H H H H
``
Marking Scheme
- 1Correct name: Butanol (or Butan-1-ol) (0.5 marks)
- 2Correct structural formula showing all bonds (0.5 marks)
Hint
Recall that a four-carbon alkane is called butane. Replacing one hydrogen atom with the alcohol functional group () gives the corresponding alcohol.
Quick Oral Answer
The name of a four-carbon alcohol is butanol, and its formula is . It has a straight chain of four carbon atoms with an group attached to one of the terminal carbons.
Analysis & Explanation
An alcohol contains the functional group attached to a carbon chain. For a four-carbon alcohol, we start with a butane skeleton () and replace one hydrogen atom with the group. This gives the formula . The IUPAC name is butanol.
Common Mistakes
- 1Forgetting to show all single bonds in the structural formula.
- 2Writing the formula of butane () instead of butanol ().
Interesting Facts
Butanol can be used as a biofuel (biobutanol) and has a higher energy density and lower volatility than ethanol.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2016?
This question carries 1 mark in the CBSE Class 10 Science 2016 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Carbon and its Compounds" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Functional Groups" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2016 paper?
This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2016 paper.