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प्रश्न
How will you prepare propane from a sodium salt of fatty acid?
उत्तर
\[\ce{CH3 \underset{\text{(Sodium Salt of butyric acid)}}{- CH2 - CH2 - COONa} ->[NaOH/CaO] \underset{\text{(Propane)}}{CH3 - CH2} - CH3 + Na2CO3}\]
Sodium salt of butyric acid on heating with sodalime gives propane.
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\[\begin{array}{cc}
\phantom{...............................}\ce{CH3}\\
\phantom{............................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide]CH3 - CH - CH2Br}\\
|\phantom{....................................}\\
\ce{CH3}\phantom{..................................}
\end{array}\]
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