<span>K2CO3 + 2HCl = 2KCl + CO2 + H2О</span>
2. <span>S + Zn = ZnS
</span><span>2 ZnS + 3 O2 = 2 SO2 + 2 ZnO
</span><span>2 SO2 + O2 = 2 SO<span>3
</span></span><span>SO3 + H2O = H2SO<span>4
1. </span></span><span>H2SO4 + NaOH = H2O + Na2SO4
</span> <span>H2SO4 + BaCl2 = BaSO4 + 2 HCl
</span> <span>H2SO4 + Mg = H2 + MgSO4</span>
<span>H2SO4 + CuO = CuSO4 + H2O</span>
<span>3H2SO4 + 2Al(OH)3 → Al2(SO4)3 + 6H2O</span>