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8.2 Carboxylic acids and their derivative — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry8.2 Carboxylic acids and their derivative1 Mark
MCQ
A carboxylic acid is converted into its anhydride using
  • A
    Thionyl chloride
  • B
    Sulphur chloride
  • C
    Sulphuric acid
  • ✓
    Phosphorus pentoxide
✓

Answer

Correct option: D.
Phosphorus pentoxide
d
${P_2}{O_5}$ acts as a dehydrating agent

$\begin{array}{*{20}{c}}
  {RCOOH} \\ 
  {RCOOH} 
\end{array}\,\xrightarrow{{{P_2}{O_5}}}$ $\begin{array}{*{20}{c}}
  {RCO} \\ 
  {RCO} 
\end{array} > O + {H_2}O$

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