S + Cl2 -> S + C -> CuS + C2 -> SO3 | OY H2S -> SO2 -> SO3 -> Naz H2SO4 + Al -> Al2(SO4)12

Chemical Reactions

The image displays several chemical reactions written on a blackboard. Here's a breakdown of the recognizable ones:

• S + Cl₂: This represents sulfur reacting with chlorine. The word below 'недост' might indicate 'insufficient' or 'incomplete' reactants or reaction conditions.
• S + C →: Sulfur reacting with Carbon.
• CuS + C₂ →: Copper(II) sulfide reacting with Carbon.
• H₂S → SO₂ → SO₃ → Na₂SO₄: This shows a reaction pathway starting with hydrogen sulfide, oxidizing to sulfur dioxide, then to sulfur trioxide, and finally forming sodium sulfate.
• H₂SO₄ + Al → Al₂(SO₄)₃: This depicts sulfuric acid reacting with aluminum. The formula for aluminum sulfate appears to be written as Al₂(SO₄)₁₂, which is likely a typo and should be Al₂(SO₄)₃. The symbol above the arrow might indicate heat (Δ) or a catalyst.