In the transformation scheme S0₂ → S0₃ → H₂S0₄ → Na₂S0₄, the substances

In the transformation scheme S0₂ → S0₃ → H₂S0₄ → Na₂S0₄, the substances Xx, X2 and X3 are, respectively: 1) 0₂, Н₂0, NaOH 3) 0₂, Н₂0, N₂ 2) N0₂, Н₂, NaCl 4) 0₂, Н₂, NH₃ • Н₂0 Write down equations of reactions corresponding to the above transformations: Genetic series of which chemical element is proposed in this task?

1) 2SO₂ + O₂ = 2SO₃

2) SO₃ + H₂O = H₂SO₄

3) H₂SO₄ + 2NaOH = Na₂SO₄ + 2H₂O
Answer: sulfur