<span>2 K + 2 H2O = H2 + 2 KOH
</span><span>2 KOH + H2SO4 = 2 H2O + K2SO<span>4
</span></span><span>K2SO4 + 2 NaCl = 2 KCl + Na2SO<span>4
</span></span><span>2 KCl + Na2CO3 = K2CO3 + 2 NaCl
</span><span>K2CO3 + 2 HCl = 2 KCl + CO2 + H2O
</span><span>2 KCl = Cl2 + 2 K</span>
<span><span><span /><span><span /></span></span></span><span>
гомологами являются 2)бензол и толуол</span>
<span>
HBO2+LiOH=H2O+LiBO2
H3AsO4+3LiOH=3H2O+Li3AsO4
3HBO2+Fe(OH)3=Fe(BO2)3+3H2O</span>
1) S + H₂ = <u>H₂S</u>
2) 2H₂S + 3O₂ = 2H₂O + <u>2SO₂</u>
3) SO₂ + NaOH = <u>NaHSO₃</u>
4) NaHSO₃ + NaOH = <u>Na₂SO₃</u> + H₂O
5)Na₂SO₃ + MnSO₄ = <u>Na₂SO₄</u> + MnSO₃↓
2NaOH + H2SO4 = Na2SO4 + 2H2ONa2SO4 + BaCl2 = 2NaCl + BaSO4NaCl + AgNO3 = NaNO3 + AgCl