14
Na₂O->Na₂CO₃->NaNO₃->NaNO₂
1)Na₂O+CO₂=Na₂CO₃
2)Na₂CO₃+2HNO₃=2NaNO₃+H₂O+CO₂↑
3)2NaNO₃=t=2NaNO₂+O₂↑
15
6KOH+Fe₂(SO₄)₃=2Fe(OH)₃↓+3K₂SO₄
KOH+HCl=KCl+H₂O
2KOH+SO₃=K₂SO₄+H₂O
6KOH+Ca₃(PO₄)₂=3Ca(OH)₂↓+2K₃PO₄
14
CaS->Ca(NO₃)₂->Ca(NO₂)₂->CaSO₄
CaS+2HNO₃=Ca(NO₃)₂+H₂S↑
Ca(NO₃)₂=Ca(NO₂)₂+O₂↑
Ca(NO₂)₂+H₂SO₄=CaSO₄↓+2HNO₂
15
2H₃PO₄+3Ca=Ca₃(PO₄)₂+3H₂↑
H₃PO₄+3KOH=K₃PO₄+3H₂O
2H₃PO₄+3MgCl₂=Mg₃(PO₄)₂↓+6HCl
2H₃PO₄+3K₂O=2K₃PO₄+3H₂O
14
NaOH->Na₂CO3->NaCl->NaNO₃
2NaOH+CO₂=Na₂CO₃+H₂O
Na₂CO₃+2HCl=2NaCl+H₂O+CO₂↑
NaCl+AgNO₃=NaNO₃+AgCl↓
15
3KOH+Al(NO₃)₃=3KNO₃+Al(OH)₃↓
2KOH+Zn(OH)2=K₂[Zn(OH)₄]
2KOH+CuCl₂=2KCl+Cu(OH)₂↓
14
Ca(OH)₂->Ca(NO₃)₂->O₂->MgO
Ca(OH)₂+2HNO₃=Ca(NO₃)₂+2H₂O↑
Ca(NO₃)₂=Ca(NO₂)₂+O₂↑
2Mg+O₂=2MgO
15
NaOH+HNO₃=NaNO₃+H₂O
2NaOH+SO₂=Na₂SO₃+H₂O
2NaOH+CuCl₂=2NaCl+Cu(OH)₂↓