Question

Помогите решить цепочку по химии! H2SO4-->H2-->H2O-->NaOH-->Na2CO3-->CO2-->H2CO3-->CaCO3-->Ca(NO3)2-->HNO3.

Answer 1

H2SO4+Zn→ZnSO4+H2↑

2H2+O2→2H2O

H2O+NACL→NaOH+HCL

2NaOH+K2CO3→2KOH+Na2CO3

Na2CO3=(t)CO2+Na2o

CO2+H2O↔H2CO3

H2CO3+Ca(OH)2→CaCO3+2H2O

CaCO3+2HNO3→H2O+CO2↑+Ca(NO3)2

 Ca(NO3)2+2H2O→2HNO3+Ca(OH)2 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answer 2

Solving the Chemical Reaction Chain

To solve the given chemical reaction chain, we will go step by step through each reaction.

1. H2SO4 → H2 - The reaction of sulfuric acid (H2SO4) to produce hydrogen gas (H2) is a reduction reaction. It can be represented as: ``` H2SO4 → H2 + SO2 + H2O ```

2. H2 → H2O - The reaction of hydrogen gas (H2) with oxygen gas (O2) to produce water (H2O) is a combustion reaction. It can be represented as: ``` 2H2 + O2 → 2H2O ```

3. H2O → NaOH - The reaction of water (H2O) with sodium metal (Na) to produce sodium hydroxide (NaOH) is a displacement reaction. It can be represented as: ``` 2Na + 2H2O → 2NaOH + H2 ```

4. NaOH → Na2CO3 - The reaction of sodium hydroxide (NaOH) with carbon dioxide (CO2) to produce sodium carbonate (Na2CO3) is a double displacement reaction. It can be represented as: ``` 2NaOH + CO2 → Na2CO3 + H2O ```

5. Na2CO3 → CO2 - The decomposition of sodium carbonate (Na2CO3) to produce carbon dioxide (CO2) is a thermal decomposition reaction. It can be represented as: ``` Na2CO3 → Na2O + CO2 ```

6. CO2 → H2CO3 - The reaction of carbon dioxide (CO2) with water (H2O) to produce carbonic acid (H2CO3) is a reversible hydration reaction. It can be represented as: ``` CO2 + H2O ⇌ H2CO3 ```

7. H2CO3 → CaCO3 - The reaction of carbonic acid (H2CO3) with calcium hydroxide (Ca(OH)2) to produce calcium carbonate (CaCO3) is a double displacement reaction. It can be represented as: ``` Ca(OH)2 + H2CO3 → CaCO3 + 2H2O ```

8. CaCO3 → Ca(NO3)2 - The reaction of calcium carbonate (CaCO3) with nitric acid (HNO3) to produce calcium nitrate (Ca(NO3)2) is a double displacement reaction. It can be represented as: ``` CaCO3 + 2HNO3 → Ca(NO3)2 + H2O + CO2 ```

9. Ca(NO3)2 → HNO3 - The decomposition of calcium nitrate (Ca(NO3)2) to produce nitric acid (HNO3) is a thermal decomposition reaction. It can be represented as: ``` Ca(NO3)2 → CaO + 2NO2 + 1/2O2 ```

Conclusion

The given chemical reaction chain involves a series of different types of chemical reactions, including reduction, combustion, displacement, double displacement, thermal decomposition, and reversible hydration reactions. Each step in the chain represents a specific chemical transformation, ultimately leading to the production of nitric acid (HNO3).