Question

Осуществите превращение. Назовите продукты каждой реакции: C -> CO2 -> H2CO3 -> Na2CO3 -> CO2

Answer 1

C + O2 = CO2 (углекислый газ или оксид углерода)

CO2 + H2O = H2CO3 (угольная кислота)

H2CO3 + 2NaOH = Na2СO3 + 2H2O (карбонат натрия и вода)

Na2CO3 = Na2O + CO2 (оксид натрия и углекислый газ)

Answer 2

Chemical Reaction Transformation and Products

The transformation of C to CO2 to H2CO3 to Na2CO3 to CO2 involves several chemical reactions and their respective products:

1. C to CO2: - The transformation of C (carbon) to CO2 (carbon dioxide) occurs through the process of combustion or oxidation. - The balanced chemical equation for this reaction is: ``` C + O2 -> CO2 ``` - The product of this reaction is carbon dioxide (CO2) .

2. CO2 to H2CO3: - The transformation of CO2 to H2CO3 (carbonic acid) involves the dissolution of carbon dioxide in water, leading to the formation of carbonic acid. - The balanced chemical equation for this reaction is: ``` CO2 + H2O -> H2CO3 ``` - The product of this reaction is carbonic acid (H2CO3) .

3. H2CO3 to Na2CO3: - The transformation of H2CO3 to Na2CO3 (sodium carbonate) involves a neutralization reaction with sodium hydroxide (NaOH). - The balanced chemical equation for this reaction is: ``` 2H2CO3 + 2NaOH -> Na2CO3 + 2H2O ``` - The product of this reaction is sodium carbonate (Na2CO3) .

4. Na2CO3 to CO2: - The transformation of Na2CO3 back to CO2 can occur through the thermal decomposition of sodium carbonate. - The balanced chemical equation for this reaction is: ``` Na2CO3 -> Na2O + CO2 ``` - The product of this reaction is carbon dioxide (CO2) .

In summary, the transformation of C to CO2 to H2CO3 to Na2CO3 to CO2 involves a series of chemical reactions resulting in the formation of carbon dioxide, carbonic acid, sodium carbonate, and the regeneration of carbon dioxide.