Question

Записать уравнения реакций:1) K→К2О→КОН→KCL;2) Al→Al2O3→Al(OH)3→Al(NO3)3;3) P→P2O5→H3PO4→Ca3(PO4)2;4) C→CO→CO2→H2CO3.

Answer 1

1)$4K+O_{2}=2K_{2}O$

  $K_{2}O+H_{2}O=2KOH$

  $KOH+HCl=KCl+H_{2}O$

2)$4Al+3O_{2}=2Al_{2}O_{3}$ 

  $Al_{2}O_{3}+3H_{2}O=2Al(OH)_3$

   $Al(OH)_3+3HNO_3=Al(NO_3)_3+3H_2O$

3)$4P+5O_2=2P_2O_5$ 

   $P_2O_5+3H_2O=2H_3PO_4$

   $2H_3PO_4+3Ca=Ca_3(PO_4)_2$(стрелка вниз)+$3H_2$(стрелка вверх)

4)$2C+O_2=2CO$

  $2CO+O_2=2CO_2$ 

  $CO_2+H_2O=H_2CO_3$ 

 

Answer 2

Equations for the Given Reactions:

1) K → K2O → KOH → KCl: - Potassium (K) reacts with oxygen (O) to form potassium oxide (K2O). - Potassium oxide (K2O) reacts with water (H2O) to form potassium hydroxide (KOH). - Potassium hydroxide (KOH) reacts with hydrochloric acid (HCl) to form potassium chloride (KCl).

2) Al → Al2O3 → Al(OH)3 → Al(NO3)3: - Aluminum (Al) reacts with oxygen (O) to form aluminum oxide (Al2O3). - Aluminum oxide (Al2O3) reacts with water (H2O) to form aluminum hydroxide (Al(OH)3). - Aluminum hydroxide (Al(OH)3) reacts with nitric acid (HNO3) to form aluminum nitrate (Al(NO3)3).

3) P → P2O5 → H3PO4 → Ca3(PO4)2: - Phosphorus (P) reacts with oxygen (O) to form phosphorus pentoxide (P2O5). - Phosphorus pentoxide (P2O5) reacts with water (H2O) to form phosphoric acid (H3PO4). - Phosphoric acid (H3PO4) reacts with calcium hydroxide (Ca(OH)2) to form calcium phosphate (Ca3(PO4)2).

4) C → CO → CO2 → H2CO3: - Carbon (C) reacts with oxygen (O) to form carbon monoxide (CO). - Carbon monoxide (CO) reacts with oxygen (O) to form carbon dioxide (CO2). - Carbon dioxide (CO2) reacts with water (H2O) to form carbonic acid (H2CO3).

Please note that the reactions provided are simplified representations and may not include all possible intermediate steps or side reactions.