Question

Na --> NaOH --> NaHCO3 --> Na2CO3 --> Na2SO4 --> NaCl

Answer 1

1) Na+Ba(OH)2=NaOH+Ba
2) NaOH+H2CO3=NaHCO3+H2O
3)NaHCO3+NaOH=Na2CO3+H2O
4)Na2CO3+CaSO4=Na2SO4+CaCO3
5)Na2SO4+BaCl2=2NaCl+BaSO4

Answer 2

The sequence of chemical reactions you've mentioned represents a series of transformations involving sodium compounds. Let's go through each step:

Na --> NaOH: This step involves the reaction of sodium (Na) with water (H2O), resulting in the formation of sodium hydroxide (NaOH) and the release of hydrogen gas (H2). The balanced equation for this reaction is:

2Na + 2H2O -> 2NaOH + H2

NaOH --> NaHCO3: Sodium hydroxide (NaOH) reacts with carbon dioxide (CO2) to produce sodium bicarbonate (NaHCO3). This reaction is commonly known as the Solvay process. The balanced equation is:

NaOH + CO2 -> NaHCO3

NaHCO3 --> Na2CO3: When heated, sodium bicarbonate (NaHCO3) decomposes to form sodium carbonate (Na2CO3), water (H2O), and carbon dioxide (CO2). The balanced equation is:

2NaHCO3 -> Na2CO3 + H2O + CO2

Na2CO3 --> Na2SO4: Sodium carbonate (Na2CO3) reacts with sulfuric acid (H2SO4) to produce sodium sulfate (Na2SO4), water (H2O), and carbon dioxide (CO2). The balanced equation is:

Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2

Na2SO4 --> NaCl: Sodium sulfate (Na2SO4) can be converted to sodium chloride (NaCl) through a variety of methods, including reacting it with hydrochloric acid (HCl). The balanced equation depends on the specific reaction conditions.

It's important to note that these reactions represent simplified transformations and may involve additional steps or conditions in practical applications.