A) \[C{{H}_{3}}\overset{\begin{smallmatrix} \oplus N{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,HCO{{O}^{-}}\]in acidic medium
B) \[C{{H}_{3}}\overset{\begin{smallmatrix} \oplus N{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,HCOOH\]in a medium of\[pH=4\]
C) \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ N{{H}_{2}} \end{smallmatrix}}{\mathop{C}}\,HCO{{O}^{-}}\]in a medium of\[pH=1\]
D) \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ N{{H}_{2}} \end{smallmatrix}}{\mathop{C}}\,HCO{{O}^{-}}\]in a medium of\[pH=2\]
Correct Answer: B
Solution :
\[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ N{{H}_{2}} \end{smallmatrix}}{\mathop{C}}\,HCOOHC{{H}_{3}}\underset{\begin{smallmatrix} | \\ \oplus N{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,HCO{{O}^{-}}\] \[\xrightarrow[acidic]{{{H}^{+}}}\,C{{H}_{3}}\,\underset{\begin{smallmatrix} | \\ \oplus N{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,HCOOH\] \[(pH=4,\,\,1\,\,or\,\,2)\]
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