Question

Выполните превращения Zn-ZnO-ZnCl2-ZnSo4-Zn(OH)2-ZnO-Zn; S-SO3-H2SO4-NA2SO4-BaSo4

Answer 1

2Zn + O2 = 2ZnO
ZnO + 2HCl = ZnCl2 + H2O
ZnCl2(тв) + H2SO4(конц) = ZnSO4 + 2HCl↑
ZnSO4 + 2NaOH = Na2SO4 + Zn(OH)2↓
Zn(OH)2 =t= ZnO + H2O
ZnO + C = Zn + CO↑

S+O2 = SO2
2SO2+O2 = 2SO3
SO3 + H2O = H2SO4
H2SO4+2NaOH = Na2SO4 + 2H2O
Na2SO4 + BaCl2 = BaSO4↓ + 2NaCl

Answer 2

Transformation of Zn-ZnO-ZnCl2-ZnSO4-Zn(OH)2-ZnO-Zn; S-SO3-H2SO4-NA2SO4-BaSO4

The given sequence of transformations involves the element zinc (Zn) and the compound sulfur trioxide (SO3). Let's break down each step of the transformation:

1. Zn to ZnO: - Zinc (Zn) reacts with oxygen (O) to form zinc oxide (ZnO). - The balanced chemical equation for this reaction is: Zn + O2 → ZnO. - provides a general reaction involving Zn(OH)2, but it can be applied to Zn as well.

2. ZnO to ZnCl2: - Zinc oxide (ZnO) reacts with hydrochloric acid (HCl) to form zinc chloride (ZnCl2) and water (H2O). - The balanced chemical equation for this reaction is: ZnO + 2HCl → ZnCl2 + H2O. - provides a general reaction involving Zn(OH)2, but it can be applied to ZnO as well.

3. ZnCl2 to ZnSO4: - Zinc chloride (ZnCl2) reacts with sulfuric acid (H2SO4) to form zinc sulfate (ZnSO4) and hydrochloric acid (HCl). - The balanced chemical equation for this reaction is: ZnCl2 + H2SO4 → ZnSO4 + 2HCl. - provides a general reaction involving Zn(OH)2, but it can be applied to ZnCl2 as well.

4. ZnSO4 to Zn(OH)2: - Zinc sulfate (ZnSO4) reacts with sodium hydroxide (NaOH) to form zinc hydroxide (Zn(OH)2) and sodium sulfate (Na2SO4). - The balanced chemical equation for this reaction is: ZnSO4 + 2NaOH → Zn(OH)2 + Na2SO4. - provides a general reaction involving Zn(OH)2.

5. Zn(OH)2 to ZnO: - Zinc hydroxide (Zn(OH)2) can undergo dehydration to form zinc oxide (ZnO). - The balanced chemical equation for this reaction is: Zn(OH)2 → ZnO + H2O. - [[1]](https://trims.edu.az/noduploads/book/quot-himiya-quot-kimya-fanni-uzra-8-ci-sinif-ucun-darslik-1566191400-652.pdf) provides a general reaction involving Zn(OH)2.

6. ZnO to Zn: - Zinc oxide (ZnO) can be reduced back to zinc (Zn) by various methods, such as heating with carbon. - The balanced chemical equation for this reaction is dependent on the specific reducing agent used.

7. S to SO3: - Sulfur (S) reacts with oxygen (O) to form sulfur trioxide (SO3). - The balanced chemical equation for this reaction is: S + O2 → SO3. - provides information about the reaction between SO2 and NaOH, which is not directly related to the given transformation.

8. SO3 to H2SO4: - Sulfur trioxide (SO3) reacts with water (H2O) to form sulfuric acid (H2SO4). - The balanced chemical equation for this reaction is: SO3 + H2O → H2SO4. - provides information about the reaction between SO2 and NaOH, which is not directly related to the given transformation.

9. H2SO4 to Na2SO4: - Sulfuric acid (H2SO4) reacts with sodium hydroxide (NaOH) to form sodium sulfate (Na2SO4) and water (H2O). - The balanced chemical equation for this reaction is: H2SO4 + 2NaOH → Na2SO4 + 2H2O. - provides information about the reaction between SO2 and NaOH, which is not directly related to the given transformation.

10. Na2SO4 to BaSO4: - Sodium sulfate (Na2SO4) reacts with barium chloride (BaCl2) to form barium sulfate (BaSO4) and sodium chloride (NaCl). - The balanced chemical equation for this reaction is: Na2SO4 + BaCl2 → BaSO4 + 2NaCl. - The given transformation does not include barium chloride (BaCl2), so this step is not directly related.

In summary, the given transformation involves the conversion of zinc (Zn) to zinc oxide (ZnO), zinc chloride (ZnCl2), zinc sulfate (ZnSO4), and zinc hydroxide (Zn(OH)2), and the conversion of sulfur (S) to sulfur trioxide (SO3) and sulfuric acid (H2SO4), and sodium sulfate (Na2SO4). The transformation also includes the conversion of zinc oxide (ZnO) back to zinc (Zn). The conversion of sodium sulfate (Na2SO4) to barium sulfate (BaSO4) is not directly related to the given transformation.