HBr H -1, Br -1
Ca₃P₂ Ca -2, P -3
MgCI₂ Mg- 2, CI-1
<u>CI₂O₇ </u> CI - 7, O - 2
<u>SiO₂ </u> Si -4, O -2
<span>1. 3NaOH + H</span>₃<span>PO</span>₄= Na₃PO₄ + 3H₂O
<span>
2.MgO +H</span>₂<span>SO</span>₄=MgSO₄ + H₂O
<span>
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
<span>
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
СaCO3 -- мел, мрамор, известняк, класс вещества -- соль
МgCO3 -- магнезит, ---соль
СaSO4*2H2O -- гибс, --- соль
МgSO4 -- кизерит, эпсомит, --- соль
Сa3(PO4)2 -- апатит, фосфорит, --- соль