A) ammonical \[\text{AgN}{{\text{O}}_{\text{3}}}\]
B) \[\text{NaHC}{{\text{O}}_{\text{3}}}\]
C) neutral \[\text{FeC}{{\text{l}}_{3}}\]
D) conc. \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]
Correct Answer: B
Solution :
Formic acid reduces Tollens reagent (ammonical \[\text{AgN}{{\text{O}}_{\text{3}}}\]and give CO with conc. \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]unlike acetic acid. While acetic acid give buff precipitate with neutral \[\text{FeC}{{\text{l}}_{3}}\]unlike formic acid. With \[\text{NaHC}{{\text{O}}_{\text{3}}}\text{,}\]both evolve carbondioxide gas. \[HCOOH+NaHC{{O}_{3}}\xrightarrow{{}}HCOONa\] \[+C{{O}_{2}}+{{H}_{2}}O\] \[C{{H}_{3}}COOH+NaHC{{O}_{3}}\,\xrightarrow{{}}C{{H}_{3}}COONa\] \[+C{{O}_{2}}+{{H}_{2}}O\]
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