2HF + Ca → CaH2 + F2
2KCIO3 + 3CaH2 → 3Ca(OH)2 + 2KCI
2NaOH + Ca → Ca(OH)2 + 2Na
2C2H6 + 7O2 + 4Ca(OH)2 → 4CaCO3 + 10H2O
2CaCo3 + O2 → 2CaO + 3Co2
Al2O3 + 3Ca → 3CaO + 2Al
2NH4Cl + 2CaO → CaCl2 + Ca(OH)2 + 2NH3
Объяснение:
1. Ca + H₂ →t°→ CaH₂
2. Ca + 2H₂O → Ca(OH)₂ + H₂↑
3. 2Ca + O₂ →t→ 2CaO
4. CaH₂ + O₂ → Ca(OH)₂
5. Ca(OH)₂(конц) + H₂CO₃ → CaCO₃ + 2H₂O
6. CaCO₃ →t°→ CaO + CO₂
7. CaO + 2HCl → CaCl₂ + H₂O
