Consider the following reaction sequence:
$CaO + CO_2 \to A$
$A \xrightarrow{\Delta} B + CO_2$
$B + H_2O \to C$
$C + CO_2 \to D$
$D + H_2O + CO_2 \to E$
Identify compounds $D$ and $E$.

  • A
    $CaC_2, \, CaO$
  • B
    $Ca(HCO_3)_2, \, CaC_2$
  • C
    $CaCO_3, \, Ca(HCO_3)_2$
  • D
    $CaCO_3, \, CaC_2$

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