level: sulphur
Questions and Answers List
level questions: sulphur
| Question | Answer |
|---|---|
| what is added to sulphur trioxide to make sulphuric acid | water, this reaction is not reversible |
| what is sulfur used to manufactor in the contact process | sulphuric acid, for this reaction : sulphur, air and water in needed |
| what do we do with the sulphur first | burned to the air |
| what happens when the sulphur burned in the air | reacts with oxygen to make sulphur dioxide. Sulphur dioxide is highly dangerous as it contributes to acid rain |
| symbol equation of reaction of sulphur and oxygen | This reaction is not reversible. S + O2 → SO2 |
| factors of the contact process | 450 degrees |
| factors of the contact prcoess | 2 atmospheres |
| factors of the contact process | vanadium catalyst |
| after sulphur + oxygen reaction, what is the next reaction | sulphur dioxide reacts with oxygen to make sulphur trioxide. This reaction is reversible. 2SO2 + O2 ⇌ 2SO3 |
| what is added to sulphur trioxide to make sulphuric acid | water, this reaction is not reversible |
| why is the addition of water to sulphur trioxide bad | highly dangerous and exothermic as it forms clouds of hazardous sulphuric acid |
| how do we fix the dangers of adding water to sulphur trioxide | sulphur trioxide is added to concentrated sulphuric acid to make oleum (H₂S₂O₇), which is then reacted with water to make sulphuric acid again. SO3 + H2SO₄ → H₂S₂O₇ then H₂S₂O₇ + H2O → 2H2SO₄ |