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b) PbO + H2SO4 --------> PbSO4 + H2O.
c) H2S + MgO ---------> MgS+H2O
lub H2S + Mg(OH)2 ---------------> MgS+2H2O
d) Ca+ 2HCl -----------> CaCl2 + H2
e) KOH + HCl ----------> KCl + H2O.
f) Al2O3+.3H2SO4 -------->Al2(SO4)3+3H2O
g)MgO+ H2SO4 --------> MgSO4+H2O
b) PbO + H2SO4 = PbSO4 + H2O.
c) H2S + MgO = MgS+H2O
lub H2S + Mg(OH)2 = MgS+2H2O
d) Ca+ 2HCl =CaCl2 + H2
e) KOH + HCl=KCl + H2O.
f) Al2O3+.3H2SO4.=Al2(SO4)3+3H2O
g)MgO+ H2SO4.= MgSO4+h2O