Question

Срочно!8 класс Химия Осуществить ряд превращений: а) P --> P2O5 --> H3PO4 --> AlPO4 --> Al(OH)3 б)Zn --> ZnO --> ZnCl2 --> Zn(OH)2 --> ZnSO4 Буду признателен если сделайте хотя бы 1

Answer 1

А) 1. 4P + 5O2 = 2P2O5
    2. P2O5 + 3H2O = 2H3PO4
    3. Al + H3PO4 = AlPO4 + H2
    4. AlPO4 + 3KOH = Al(OH)3 + K3PO4

Answer 2

А) 4P+5O2->2P2O5
6P2O5+HNO3->2H3PO4+3N2O5
2H3PO4+2Al->2AlPO4+3H2
AlPO4+3NaOH->Al(OH)3+Na3PO4 (Тут ещё кажется может быть комплексная соль Na[Al(OH)4])
б) 2Zn+O2->2ZnO
Zn+Cl2->ZnCl2
ZnCl2+2NaOH->Zn(OH)2+2NaCl
Zn(OH)2+H2SO4->ZnSO4+2H2O

Answer 3

Chemical Transformations:

a) The given series of transformations involves the conversion of different elements and compounds. Let's break down each step:

1. P → P2O5: Phosphorus (P) reacts with oxygen (O2) to form phosphorus pentoxide (P2O5). This is an example of a combustion reaction. The balanced chemical equation for this reaction is:

   4P + 5O2 → 2P2O5
   

2. P2O5 → H3PO4: Phosphorus pentoxide (P2O5) reacts with water (H2O) to form phosphoric acid (H3PO4). This is an example of a hydration reaction. The balanced chemical equation for this reaction is:

   P2O5 + 3H2O → 2H3PO4
   

3. H3PO4 → AlPO4: Phosphoric acid (H3PO4) reacts with aluminum hydroxide (Al(OH)3) to form aluminum phosphate (AlPO4). This is an example of a double displacement reaction. The balanced chemical equation for this reaction is:

   2H3PO4 + 3Al(OH)3 → Al2(PO4)3 + 6H2O
   

4. AlPO4 → Al(OH)3: Aluminum phosphate (AlPO4) decomposes to form aluminum hydroxide (Al(OH)3). This is an example of a decomposition reaction. The balanced chemical equation for this reaction is:

   AlPO4 → Al(OH)3 + H3PO4
   

b) Let's now look at the second series of transformations:

1. Zn → ZnO: Zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO). This is an example of a combustion reaction. The balanced chemical equation for this reaction is:

   2Zn + O2 → 2ZnO
   

2. ZnO → ZnCl2: Zinc oxide (ZnO) reacts with hydrochloric acid (HCl) to form zinc chloride (ZnCl2). This is an example of an acid-base reaction. The balanced chemical equation for this reaction is:

   ZnO + 2HCl → ZnCl2 + H2O
   

3. ZnCl2 → Zn(OH)2: Zinc chloride (ZnCl2) reacts with sodium hydroxide (NaOH) to form zinc hydroxide (Zn(OH)2). This is an example of a double displacement reaction. The balanced chemical equation for this reaction is:

   ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl
   

4. Zn(OH)2 → ZnSO4: Zinc hydroxide (Zn(OH)2) reacts with sulfuric acid (H2SO4) to form zinc sulfate (ZnSO4). This is an example of an acid-base reaction. The balanced chemical equation for this reaction is:

   Zn(OH)2 + H2SO4 → ZnSO4 + 2H2O
   

Please note that these reactions are simplified representations, and in reality, reaction conditions and stoichiometry may vary.