Question

Помогите решить цепочку: K2SO4-->KOH-->KHS-->K2S-->KNO3

Answer 1

K2SO4 + Ba(OH)2 => BaSO4↓ + 2 KOH
KOH(недостаток) + H2S => KHS + H2O 
KHS + KOH => K2S + H2O
K2S + Pb(NO3)2 => PbS↓ + 2 KNO3  

Answer 2

K2SO4 to KOH

The reaction between K2SO4 (potassium sulfate) and KOH (potassium hydroxide) can be represented by the following balanced chemical equation:

K2SO4 + 2KOH → 2K2O + H2O + SO3

In this reaction, potassium sulfate reacts with potassium hydroxide to form potassium oxide, water, and sulfur trioxide. [[1]]

KOH to KHS

The reaction between KOH (potassium hydroxide) and H2S (hydrogen sulfide) can be represented by the following balanced chemical equation:

KOH + H2S → KHS + H2O

In this reaction, potassium hydroxide reacts with hydrogen sulfide to form potassium hydrosulfide and water. [[2]]

KHS to K2S

The reaction between KHS (potassium hydrosulfide) and KOH (potassium hydroxide) can be represented by the following balanced chemical equation:

KHS + KOH → K2S + H2O

In this reaction, potassium hydrosulfide reacts with potassium hydroxide to form potassium sulfide and water. [[3]]

K2S to KNO3

The reaction between K2S (potassium sulfide) and HNO3 (nitric acid) can be represented by the following balanced chemical equation:

K2S + 2HNO3 → 2KNO3 + H2S

In this reaction, potassium sulfide reacts with nitric acid to form potassium nitrate and hydrogen sulfide. [[4]]

KNO3

The final product of the given chemical reaction chain is KNO3 (potassium nitrate).

To summarize the reaction chain: K2SO4 → KOH → KHS → K2S → KNO3

Please note that the reactions mentioned above are simplified representations and may involve additional steps or side reactions in practice.