Otrzymaj czterema sposobami:
1.węglan wapnia
2.siarczek sodu
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Otrzymaj czterema sposobami:
1.węglan wapnia
2.siarczek sodu
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A)
Ca+H₂CO₃---> CaCO₃+H₂<strzalka w gore>
CaO+H₂CO₃---->CaCO₃+H₂O
Ca(OH)₂+H₂CO₃--->CaCO₃+2H₂O
CaO+CO₂---->CaCO₃
B)
2Na+H₂S---> Na₂S+ H₂<strzalka w gore>
Na₂O+H₂S--->Na₂S+H₂O
2NaOH+H₂S--->Na₂S+2H₂O
2Na+S--->Na₂S