1) С+O₂(изб.)=CO₂
2) CO₂+BaO=BaCO₃
3) BaCO₃+2HNO₃=Ba(NO₃)₂+CO₂↑+H₂O
4) Ba(NO₃)₂+CuSO₄=BaSO₄↓+Cu(NO₃)₂
1) С+O₂(изб.)=CO₂
2) CO₂+BaO=BaCO₃
3) BaCO₃+2HNO₃=Ba(NO₃)₂+CO₂↑+H₂O
4) Ba(NO₃)₂+CuSO₄=BaSO₄↓+Cu(NO₃)₂