Ответ:
CuO + H2SO4 = CuSO4 + H2O
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
CuCl2 + Ag2SO4 = CuSO4 + 2AgCl
Объяснение:
СuCl2 + 2KOH = 2KCl + Cu(OH)2
Cu(+2) + 2Cl(-) + 2K(+) + 2OH(-) = 2K(+) + 2OH(-) + Cu(OH)2
Cu(+2) + 2OH(-) = Cu(OH)2
<em>CaCl2 = Ca + Cl2 </em>
<em><span>2Ca + O2 = 2CaO </span></em>
<em><span>CaO + H2O = Ca(OH)2 </span></em>
<em><span>Ca(OH)2 + CO2 = CaCO3 + H2O </span></em>
<em><span>CaCO3 + H2O + CO2 = Ca(HCO3)2 </span></em>
ZnCl2 + Mg = MgCl2 + Zn
AlCl3 + Fe = не идет
<span>Mg(NO3)2 + Fe = не идет
</span><span>2AlCl3 + 3Mg = 3MgCl2 + 2Al
</span><span>Cu + 2H2SO4(конц.) = CuSO4 + SO2 + 2H2O</span>