Question

S⇒H2S⇒K2S⇒FeS⇒SO2 надо написать реакцию

Answer 1

S + H2 = H2S
H2S + 2KOH = K2S
K2S + FeCl2 = 2KCl + FeS
4FeS + 7O2 = 2Fe2O3 + 4SO2

Answer 2

Reaction: S ⇒ H2S ⇒ K2S ⇒ FeS ⇒ SO2

The given reaction sequence involves the conversion of sulfur (S) to sulfur dioxide (SO2) through a series of reactions. Let's break down the reaction step by step:

1. Sulfur (S) reacts with hydrogen gas (H2) to form hydrogen sulfide (H2S): ``` S + H2 → H2S ```

2. Hydrogen sulfide (H2S) reacts with potassium hydroxide (KOH) to form potassium sulfide (K2S) and water (H2O): ``` H2S + KOH → K2S + H2O ```

3. Potassium sulfide (K2S) reacts with iron (Fe) to form iron sulfide (FeS): ``` K2S + Fe → FeS + K2 ```

4. Iron sulfide (FeS) reacts with oxygen (O2) to form sulfur dioxide (SO2): ``` FeS + O2 → Fe + SO2 ```

Therefore, the complete reaction sequence is as follows: ``` S + H2 → H2S H2S + KOH → K2S + H2O K2S + Fe → FeS + K2 FeS + O2 → Fe + SO2 ```

Please note that the reaction conditions (temperature, pressure, etc.) are not specified, so the reaction may vary under different conditions.