A - Fe
Б - Fe2O3
В - FeCl3
Г - Fe(OH)3
2Fe + 3O2 = Fe2O3
Fe2O3 + 6HCl = 2FeCl3 + 3H2O
FeCl3 + 3NaOH = Fe(OH)3↓ + 3NaCl
2Fe(OH)3 --(t°)--> Fe2O3 + 3H2O
Простые вещества: О2-собственно кислород,О3-озон
Сложные вещества :Н2О-вода,СО2-углекислый газ
раствор мутнеет тоесть выпадает белый осадок карбоната кальция
<span>1. 3NaOH + H</span>₃<span>PO</span>₄= Na₃PO₄ + 3H₂O
<span>
2.MgO +H</span>₂<span>SO</span>₄=MgSO₄ + H₂O
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3.H</span>₂<span>SO</span>₄ + 2<span>NaOH = Na</span>₂SO₄ + 2H₂O
<span>
4.Al</span>₂<span>S</span>₃+6<span>HNO</span>₃= 2AI(NO₃)₃ + 3H₂S↑
<span>
5.CaCO</span>₃+2<span>HCI = CaCI</span>₂ + CO₂↑ + H₂O
<span>
6.AgNO</span>₃<span>+HCl = AgCI</span>↓<span> + HNO</span>₃
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7.3Mg+2H</span>₃<span>PO</span>₄ = Mg₃(PO₄)₂ + 3H₂↑
<span>
8.P</span>₂<span>O</span>₅ +3<span>H</span>₂O=2H₃PO₄
<span>
9.Cu(NO</span>₃)₂ +<span>Zn = Zn(NO</span>₃<span>)</span>₂ + Cu↓
<span>
10.Na</span>₂<span>CO</span>₃+<span> 2HNO</span>₃=2NaNO₃ + CO₂↑ +H₂O
<span>
11.Mg(OH)</span>₂ +<span>H</span>₂<span>SO</span>₄ = MgSO₄ + 2H₂O
<span>
12.Al</span>₂<span>O</span>₃+6<span>HCI=2AICI</span>₃ + 3H₂O
Zn(CO3)2 +2HCl=ZnCl2+H2O+CO2