Подробное описание хода решения задачи в фото
<span>Zn -> ZnO -> Zn(NO₃)₂ -> Zn(OH)₂ - > Na₂ZnO₂
Zn(OH)₂ -> ZnSO₄
</span><span>2Zn + O₂=2ZnO
</span>ZnO +2HNO₃= Zn(NO₃)₂ + H₂O
<span>Zn(NO₃)₂ + 2NaOH = Zn(OH)₂↓ + 2NaNO₃
</span>Zn(OH)₂ + 2NaOH = Na₂ZnO₂ + 2H₂O
<span> Na₂ZnO₂+ H₂SO₄=Na₂SO₄ + Zn(OH)₂↓
</span><span>Zn(OH)₂ + H₂SO₄= ZnSO₄+ 2H₂O</span>
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
Fe(+3) + 3Cl(-) + 3Na(+) + 3OH(-) = Fe(OH)3 + 3Na(+) + 3Cl(-)
Fe(+3) + 3OH(-) = Fe(OH)3
Na2SO4 + BaCl2 = BaSO4 + 2NaCl
2Na(+) + SO4(-2) + Ba(+2) + 2Cl(-) = BaSO4 + 2Na(+) + 2Cl(-)
Ba(+2) + SO4(-2) = BaSO4
2Fe(OH)3 + 3H2SO4 = Fe2(SO4)3 + 6H2O
2Fe(OH)3 + 6H(+) + 3SO4(-2) = 2Fe(+3) + 3SO4(-2) + 6H2O
2Fe(OH)3 + 6H(+) = 2Fe(+3) + 6H2O
