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JEE Main
Exam
JEE Main
Subject
Chemistry
Chapter
Redox Reactions

JEE Main · Chemistry · Redox Reactions

Formic acid is heated with conc. \ (H _ 2 SO _ 4 ) at (100^ C ) to...

Formic acid is heated with conc. \(\mathrm{H}}_{2}\mathrm{SO}}_{4}) at (100^{\circ} C\mathrm{C}) to form AA and BB. When \(\mathrm{Fe}}_{2}\mathrm{O}}_{3}) is heated strongly with BB, the products formed are CC and D.CD . C can also be obtained by reacting \(\mathrm{CaCO}}_{3}) with dil.HCl. What isD$ ?

Options

  1. A(Fe\mathrm{Fe})
  2. B(CO\mathrm{CO})
  3. C\$(\mathrm{CO}}_{2})
  4. D(\mathrm{Fe}}_{3} \mathrm{O}}_{4})

Correct answer

A. (Fe\mathrm{Fe})

Step-by-step solution

\(HCOOH⟶ Conc H2SO4CO(B)+H2O(A)(\mathrm{HCOOH} \stackrel{\text { Conc } \mathrm{H}_2 \mathrm{SO}_4}{\longrightarrow} \underset{(B)}{\mathrm{CO}}+\underset{(A)}{\mathrm{H}_2 \mathrm{O}}) (\underset{(B)}{3 \m\mmathrm{CO}}+\mathrm{Fe}_2 \mathrm{O}}_{3} \longrightarrow \underset{(D)}{2\mathrm{Fe}}+\underset{(C)}{3 \mathrm{CO}}_{2}}) Thus,Dis$(Feis \$(\mathrm{Fe}), Further, \(\mathrm{CaCO}}_{3}+2\mathrm{HCl} \text { (dil.) } \longrightarrow \mmathrm{CO}_2+\mathrm{H}}_{2}\mathrm{O}+\mathrm{CaCl}}_{2})
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