4Al+3O2=2Al2O3
алюминий восстановитель, коэффицент 4
B) CI -1 - 1e -> CI окислитель
I2 0 + 2e -> 2I восстановитель
2KOH+MgCl2<=>Mg(OH)2+2KCL
2K+ + 2OH- + Mg2+ 2Cl- <=> Mg2+ + 2OH-+ 2K+ + 2Cl-
б)2NaOH+H2SO4-->Na2SO4+H2O
2Na+ + 2OH- + 2H+ + SO4 2- --> 2Na+ + SO4 2- + H2O
2OH-+ 2H+ -->H2O
в) K2S+2HCl<-->2KCl+H2S
2K+ + S2- + 2H+ + 2Cl- <--> 2K+ + 2CL- + 2H+ + S2-
г)2СН3СООNa+H2SO4<-->2CH3COOH+Na2SO4
2CH3COO- +2Na+ + 2H+ +SO4 2- <-->2CH3COO- +2H+ +2Na+ + 2O4 2-
д)RbOH+HNO3-->RbNO3+H2O
Rb+ + OH- + H+NO3--->Rb+ + NO3- + H2O
OH-+ +H+ -->H2O
e)Na2SO4 + BaCl2-->2NaCL + BaSO4↓
2Na+ + SO4 2- + Ba2+ + 2Cl- -->2Na+ + 2Cl- + BaSO4
SO4 2- + Ba2+ -->BaSO4
ж)Na2CO3+2HCl-->2NaCl+H2O+CO2↑
2Na+ + CO3 2- + 2H+ +2Cl- --.>2Na+ + 2Cl- + H2O+CO2
CO3 2- + 2H+ --> H2O+CO2
Обратимые будут - а),в) , г)
Необратимые - б) , д), е), ж)
давление. т.к. коэффициенты равно и в правой и в левой частях
1)1.<span>C+O2=CO2 </span>
<span>CO2+2NaOh=Na2CO3+H2O </span>
<span>Na2CO3+2HCL=2NaCL+H2O+CO2 </span>
<span>CO2+Ca(OH)2=CaCO3+H2O</span>
<span>2.<span> 4P+5O2 = 2P2O5 </span>
<span> P2O5 + 3H2O = 2H3PO4</span>
<span> H3PO4 + 3KOH = K3PO4 + 3H2O</span></span>
<span><span><span>H3PO4+KOH--KH2PO4+H2O</span></span></span>
<span><span><span><span>K2HPO4+KOH---K3PO4+H2O(только так могу <span> K3PO4 получить)</span></span></span></span></span>
<span><span><span><span><span><span>2K3PO4 + 3CaCl2 = Ca3(PO4)2 + 6KCl</span></span></span></span></span></span>
<span><span><span><span><span><span>2)1.<span> CaCO3---t--->CaO+CO2 </span>
<span>CaO+H2O->Ca(OH)2 </span>
<span>Ca(OH)2+CO---t--->CaCO3+H2 </span>
<span>CaCO3+2HNO3->Ca(NO3)2+H2O+CO2 </span>
2.</span></span></span></span></span></span>
2Mg + O2 = 2MgO
MgO + H2O = Mg(OH)2
Mg(OH)2 + H2SO4 = MgSO4 + 2H2O
3.Fe2(SO4)3 + 6NaOH = 3Na2SO4 + Fe(OH)3
Fe(OH)3= Fe2O3+ 3SO3
<span><span><span><span><span><span><span>Fe2O3+3H2SO4=Fe2(SO4)3+3H2O</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span>4.<span>AL2(SO4)3+ 6NaOH=2AL(OH)3+3Na2SO4 </span>
<span>2AL(OH)3=AL2O3+3H2O </span>
<span>AL2O3+6HCL=2ALCL3+3H2O </span>
<span>ALCL3+3NaOH=AL(OH)3+3NaCL </span>
<span>AL(OH)3+HCL=AL(OH)2CL+H2O</span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>5.<span>SO3+ZnO=ZnSO4</span>
<span>ZnSO4+2NaOH=Zn(OH)2+Na2SO4</span>
<span>Zn(OH)2 =ZnO+Н2О</span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span>Zn(OH)2 = ZnO + H2O</span></span></span></span></span></span></span></span></span></span>
