Ca-cah2-ca(oh)2-caco3-cao

Question

Ca-cah2-ca(oh)2-caco3-cao

Answer 1

Ca + H₂ = CaH₂
CaH₂ + 2H₂O = Ca(OH)₂ + 2H₂
Ca(OH)₂ + CO₂ = CaCO₃ + H₂O
CaCO₃ = CaO + CO₂ (t)