Answer:
Sulfur dioxide is a covalent bond because we have two non-metals (Sulfur and Oxygen).
[tex]S + O_{2} \to SO_{2}[/tex] (Sulfur dioxide formula)
It's called Sulfur dioxide but it can be called Sulfurous anhydride and Sulfur (lV) oxide.
Sulfur dioxide can have different reactions:
-
In the presence of oxygen oxidation of sulfur dioxide to sulfur trioxide occurs and the formula is:
[tex]SO_{2}+\frac{1}{2} O_{2}= SO3[/tex]
The equal is because it's a reversible equation. This reaction is spontaneous.
- The sulfur trioxide reacting with water produces sulfuric acid. The formula is:
[tex]3 SO_{2} + O_{3} \to 3 SO_{3}\\SO_{3} + H_{2}O \to H_{2}SO_{4}[/tex]
- Also the sulfur dioxide reacting with sodium hydroxide produces sodium sulfite and the formula is:
[tex]SO_{2} + 2 NaOH \to Na_{2}SO_{3} + H_{2}O[/tex]
- And finally we have the reduction of sulfur dioxide (it can be in presence of hydrogen sulfide) getting elemental sulfur and water. The formula is:
[tex]SO_{2} + 2 H_{2}S \to 3 S + 2 H_{2}O[/tex]
