Question

Даны вещества: сульфид свинца (II), сульфит натрия, пероксид водорода, концентрированная серная кислота. Напишите уравнения четырех возможных реакций между этими веществами.

Answer 1

1)H2O2+NA2SO3=Na2SO4+H2O

2)H2O2+PbS=S+Pb(OH)2

3)PbS+Na2SO3=Na2S+PbSO3 (осадок стрелочка вниз)

4)H2SO4+Na2SO3=Na2SO4+SO2+H2O

Answer 2

Possible Reactions between Lead (II) Sulfide, Sodium Sulfite, Hydrogen Peroxide, and Concentrated Sulfuric Acid

1. Reaction between Lead (II) Sulfide and Sodium Sulfite: - Lead (II) sulfide (PbS) reacts with sodium sulfite (Na2SO3) to form lead (II) sulfite (PbSO3) and sodium sulfide (Na2S): ``` PbS + Na2SO3 → PbSO3 + Na2S ```

2. Reaction between Lead (II) Sulfide and Hydrogen Peroxide: - Lead (II) sulfide (PbS) reacts with hydrogen peroxide (H2O2) to form lead (II) sulfate (PbSO4) and water (H2O): ``` PbS + H2O2 → PbSO4 + H2O ```

3. Reaction between Lead (II) Sulfide and Concentrated Sulfuric Acid: - Lead (II) sulfide (PbS) reacts with concentrated sulfuric acid (H2SO4) to form lead (II) sulfate (PbSO4) and hydrogen sulfide (H2S): ``` PbS + H2SO4 → PbSO4 + H2S ```

4. Reaction between Sodium Sulfite and Concentrated Sulfuric Acid: - Sodium sulfite (Na2SO3) reacts with concentrated sulfuric acid (H2SO4) to form sodium sulfate (Na2SO4) and sulfur dioxide (SO2): ``` Na2SO3 + H2SO4 → Na2SO4 + SO2 + H2O ```

Please note that these reactions are based on the information provided and may not represent an exhaustive list of all possible reactions between the given substances.