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Formic acid is heated with conc. ( H ₂ SO ₄ ) at (100^ C ) to form (A ) and (B ). When ( Fe ₂ O ₃ ) is heated strongly with (B ), the products formed are (C ) and (D . C ) can also be obtained by reacting ( CaCO ₃ ) with dil.HCl. What is (D ) ?

Options

  1. A( Fe )
  2. B( CO )
  3. C( CO ₂ )
  4. D( Fe ₃ O ₄ )

Correct answer

A. ( Fe )

Step-by-step solution

( HCOOH Conc H ₂ SO ₄ (B) CO + (A) H ₂ O ) ( (B) 3 CO + Fe ₂ O ₃ (D) 2 Fe + (C) 3 CO ₂ ) Thus, (D ) is ( Fe ), Further, ( CaCO ₃+2 HCl (dil.) CO ₂+ H ₂ O + CaCl ₂ )

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