Question

Na → Na2O → NaOH → NaCO3 → CO2 → H2CO3​

Answer 1

4Na + O2 = 2Na2O
Na2O + H2O = 2NaOH
2NaOH + CO2 = Na2CO3 + H2O
Na2CO3 + H2CO3 = 2NaHCO3

Answer 2

Ответ:

1) 4Na+O2=2Na2O

2) Na2O+H2O=2NaOH

3) 2NaOH+CO2=Na2CO3+H2O

4) Na2CO3+2HCl=CO2+2NaCl+H2O

5) CO2+H2O=H2CO3

Answer 3

It looks like you're describing a series of chemical reactions involving sodium (Na) and various other compounds. Let me break down the reactions for you:

1. $2Na \rightarrow Na_2O$: This represents the reaction of sodium (Na) with oxygen (O₂) to form sodium oxide ($Na_2O$).

2. $Na_2O + H_2O \rightarrow 2NaOH$: Sodium oxide ($Na_2O$) reacts with water ($H_2O$) to form sodium hydroxide ($NaOH$).

3. $2NaOH + CO_2 \rightarrow Na_2CO_3 + H_2O$: Sodium hydroxide ($NaOH$) reacts with carbon dioxide ($CO_2$) to form sodium carbonate ($Na_2CO_3$) and water ($H_2O$).

4. $Na_2CO_3 \rightarrow CO_2 + Na_2O$: Sodium carbonate ($Na_2CO_3$) decomposes into carbon dioxide ($CO_2$) and sodium oxide ($Na_2O$).

5. $CO_2 + H_2O \rightarrow H_2CO_3$: Carbon dioxide ($CO_2$) dissolves in water ($H_2O$) to form carbonic acid ($H_2CO_3$).

These reactions represent a series of transformations involving sodium and related compounds. If you have any specific questions about these reactions or if you need further details, please let me know!