СОСТАВЬТЕ УРАВНЕНИЯ РЕАКЦИЙ,СХЕМЫ КОТОРЫХ ДАНЫ НИЖЕ:
а) Ca--->CaO-->Ca(OH)2-->Ca(NO3)2-->CaSO4
б) Al2O3-->Al2(SO4)3-->Al(OH)3-->Al2O3
г)Cu-->CuO-->CuCl2-->Cu(OH)2-->CuO-->Cu-->CuSO4-->Cu(OH)2
е)C-->CO2-->Na2CO3-->CO2-->CaCO3
ж)Fe2(SO4)3-->Fe(OH)3-->Fe2O3-->Fe2(SO4)3
з)P-->P2O5-->H3PO4-->Ca3(PO4)2-->H3PO4-->Ca(H2PO4)2
и) Al2(SO4)3-->Al(OH)3-->Al2O3-->AlCl3-->Al(OH)3-->Al(OH)2Cl
к)SO3--ZnSO4-->Zn(OH)2-->ZnO

а) Ca → CaO → Ca(OH)₂ → Ca(NO₃)₂ → CaSO₄

1. $2Ca+O_2\to 2CaO$

2. $CaO+H_{2}O\to Ca(OH{)}_2$

3. $Ca(OH{)}_2+2HN{O}_3\to Ca(N{O}_3{)}_2+2H_{2}O$

4. $Ca(N{O}_3{)}_2+H_{2}S{O}_4\to CaS{O}_4\downarrow +2HN{O}_3$

б) Al₂O₃ → Al₂(SO₄)₃ → Al(OH)₃ → Al₂O₃

1. $A{l}_2{O}_3+3H_{2}S{O}_4\to A{l}_2(S{O}_4{)}_3+3H_{2}O$

2. $A{l}_2(S{O}_4{)}_3+6NaOH\to 2Al(OH{)}_3\downarrow +3N{a}_{2}S{O}_4$

3. $2Al(OH{)}_3\stackrel{t}{\to }A{l}_2{O}_3+3H_{2}O$

г) Cu → CuO → CuCl₂ → Cu(OH)₂ → CuO → Cu → CuSO₄ → Cu(OH)₂

1. $2Cu+O_2\stackrel{t}{\to }2CuO$

2. $CuO+2HCl\to CuC{l}_2+H_{2}O$

3. $CuC{l}_2+2NaOH\to Cu(OH{)}_2\downarrow +2NaCl$

4. $Cu(OH{)}_2\stackrel{t}{\to }CuO+H_{2}O$

5. $CuO+H_2\stackrel{t}{\to }Cu+H_{2}O$

6. $Cu+2H_{2}S{O}_4\to CuS{O}_4+S{O}_2\uparrow +2H_{2}O$

7. $CuS{O}_4+2NaOH\to Cu(OH{)}_2\downarrow +N{a}_{2}S{O}_4$

е) C → CO₂ → Na₂CO₃ → CO₂ → CaCO₃

1. $C+O_2\to C{O}_2$

2. $C{O}_2+2NaOH\to N{a}_{2}C{O}_3+H_2$