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Tamil Nadu Board of Secondary EducationHSC Science Class 11

Write the molecular formula and possible structural formula of the first four members of homologous series of carboxylic acids. - Chemistry

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Question

Write the molecular formula and possible structural formula of the first four members of homologous series of carboxylic acids.

Answer in Brief
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Solution

S.No. Name Molecular formula Structural formula
1. Formic acid CH2O2 \[\begin{array}{cc}\ce{O}\phantom{..}\\
||\phantom{..}\\\ce{H - C - OH}
\end{array}\]
2. Acidic acid C2H4O2 \[\begin{array}{cc}\phantom{.}\ce{O}\\
\phantom{.}||\\\ce{CH3 - C - OH}
\end{array}\]
3. Propionic acid C3H6O2 \[\begin{array}{cc}\phantom{........}\ce{O}\\
\phantom{........}||\\\ce{CH3 - CH2 - C - OH}\end{array}\]
4. n - Butyric acid C4H8O2 \[\begin{array}{cc}\phantom{...............}\ce{O}\\
\phantom{...............}||\\\ce{CH3 - CH2 - CH2 - C - OH}\end{array}\]
5. iso - Butyric acid C4H8O2 \[\begin{array}{cc}\phantom{.......}\ce{O}\\
\phantom{.......}||\\\ce{CH3 - CH -  C - OH}\\
|\phantom{......}\\\ce{CH3}\phantom{...}
\end{array}\]
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Classification of Organic Compounds
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Chapter 11: Fundamentals of Organic Chemistry - Evaluation [Page 156]

APPEARS IN

Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 11 TN Board
Chapter 11 Fundamentals of Organic Chemistry
Evaluation | Q II. 7. | Page 156

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\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
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\ce{CH3\phantom{.................}}\\
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\begin{array}{cc}
\ce{CH3}\phantom{..................}\\
|\phantom{....................}\\
\ce{CH3 - C - CH - CH2 - CH2 - CH3}\\
|\phantom{....}|\phantom{................}\\
\ce{CH3}\ce{CH3}\phantom{..............}
\end{array}


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\[\begin{array}{cc}
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\end{array}\]


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