Question

H2SO4 -> H2--> H2O -> Ba(OH)2 -​

Answer 1

• H2SO4+Fe = FeSO4+H2;
• 2H2+O2 = 2H2O
• H2O+BaO = Ba(OH)2

Answer 2

It seems like you're trying to represent a chemical reaction pathway or a series of chemical reactions involving the compounds H2SO4 (sulfuric acid), H2 (hydrogen gas), H2O (water), and Ba(OH)2 (barium hydroxide). However, your representation is somewhat unclear. Let me try to interpret what you might be asking:

1. H2SO4 (Sulfuric Acid) → This is sulfuric acid, a strong acid with the chemical formula H2SO4.

2. H2 (Hydrogen Gas) → This appears to be the molecular form of hydrogen gas, H2. Hydrogen gas can be produced in various ways, including the reaction of certain metals with acids.

3. H2O (Water) → H2O represents water, which can be formed by the combination of hydrogen gas (H2) and oxygen gas (O2) or in various other chemical reactions.

4. Ba(OH)2 (Barium Hydroxide) → This is barium hydroxide, a strong base with the chemical formula Ba(OH)2. It's often used in chemical reactions as a source of hydroxide ions (OH-) for neutralization reactions or precipitation reactions.

If you have a specific chemical reaction or series of reactions in mind involving these compounds, please provide more details, and I'd be happy to help you further.