Question

NA2S>S>SO2>SO3>H2SO4>BASO4

Answer 1

Na2S+I2=2NaI+S↓

S+O2=SO2

2SO2+O2=2SO3

SO3+H2O=H2SO4

H2SO4+BaCl2=BaSO4↓+2HCl

Answer 2

The sequence you provided appears to represent a series of chemical reactions involving sulfur compounds. Let's interpret it step by step:

1. NA2S (Sodium sulfide): This is a compound containing sodium and sulfur.

2. S (Sulfur): This indicates elemental sulfur, which is not in a compound form.

3. SO2 (Sulfur dioxide): This is a gaseous compound formed by the combination of sulfur and oxygen.

4. SO3 (Sulfur trioxide): Another gaseous compound formed by the combination of sulfur and oxygen.

5. H2SO4 (Sulfuric acid): This is a strong mineral acid formed when sulfur trioxide reacts with water.

6. BASO4 (Barium sulfate): This is an insoluble compound formed when barium ions (Ba^2+) react with sulfate ions (SO4^2-).

It seems like this sequence represents a series of reactions where sulfur is progressively oxidized and transformed into different compounds. It ends with the formation of sulfuric acid (H2SO4) and barium sulfate (BASO4), the latter being an insoluble solid.

Keep in mind that chemical reactions often involve specific reaction conditions and catalysts, and the actual reaction pathway may vary depending on the context. Additionally, the sequence provided is missing important information about reaction conditions and stoichiometry, which are crucial for a comprehensive understanding of the reactions.