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Final answer:
Explanation of the Contact process in sulphuric acid production and answering related questions.
Explanation:
The Contact process for manufacturing sulphuric acid:
- Sulfur is burned to produce sulfur dioxide: S(s) + O₂(g) → SO₂(g).
- Continued reaction of sulfur dioxide with oxygen to produce sulfur trioxide: 2SO₂(g) + O₂(g) → 2SO₃(g).
- Reaction of sulfur trioxide with water to produce sulfuric acid: SO₃(g) + H₂O(l) → H₂SO₄(l).
Answering the given questions:
- Principle for manufacture of sulphuric acid by contact process: The Contact process involves the conversion of sulfur to sulfur dioxide, sulfur dioxide to sulfur trioxide, and finally, sulfur trioxide to sulfuric acid.
- Conc. H₂SO₄ dilution: Concentrated H₂SO₄ cannot be diluted by adding water directly because it is highly exothermic and can cause splattering.
- Formic acid with conc. H₂SO₄: When formic acid is heated with concentrated H₂SO₄, it decomposes to produce carbon monoxide, carbon dioxide, and water.
- Testing for SO₄²⁻ ion: The SO₄²⁻ ion can be tested in the lab by adding barium chloride, resulting in the formation of a white precipitate of barium sulfate.
- Reason H₂SO₄ acts as an oxidizing agent: H₂SO₄ always acts as an oxidizing agent due to its ability to donate protons and accept electrons in chemical reactions.
Learn more about Sulfuric acid production and properties here:
https://brainly.com/question/43972089
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