Question

Складіть рівняння реакцій за допомогою яких можна здійснити такі перетворення: Cu -> CuO -> CuBr2 -> Cu(OH)2 -> CuO -> Cu -> CuSO4 -> BaSO4 40 БАЛІВ

Answer 1

Ответ:

2Cu + O2 (изб.)→ 2CuO

CuO + 2HBr → CuBr2 + H2O

CuBr2 + 2NaOH (разб.)→ Cu(OH)2↓ + 2NaBr

Cu(OH)2 → CuO + H2O

CuO + H2 → Cu + H2O

Cu + 2H2SO4 (конц.)→ CuSO4 + SO2↑ + 2H2O

CuSO4 + BaCl2 → BaSO4↓ + CuCl2

Объяснение:

Answer 2

Equations for the Given Transformations:

To perform the given transformations, we need to write the balanced chemical equations for each step. Here are the equations:

1. Copper (Cu) to Copper(II) Oxide (CuO): - Equation: 2Cu + O2 → 2CuO [[1]]

2. Copper(II) Oxide (CuO) to Copper(II) Bromide (CuBr2): - Equation: CuO + 2HBr → CuBr2 + H2O [[2]]

3. Copper(II) Bromide (CuBr2) to Copper(II) Hydroxide (Cu(OH)2): - Equation: CuBr2 + 2NaOH → Cu(OH)2 + 2NaBr [[3]]

4. Copper(II) Hydroxide (Cu(OH)2) to Copper(II) Oxide (CuO): - Equation: Cu(OH)2 → CuO + H2O [[4]]

5. Copper(II) Oxide (CuO) to Copper (Cu): - Equation: CuO + H2 → Cu + H2O [[5]]

6. Copper (Cu) to Copper(II) Sulfate (CuSO4): - Equation: Cu + 2H2SO4 → CuSO4 + 2H2O + SO2 [[6]]

7. Copper(II) Sulfate (CuSO4) to Barium Sulfate (BaSO4): - Equation: CuSO4 + BaCl2 → BaSO4 + CuCl2 [[7]]

Note: The coefficients in the equations may vary depending on the reaction conditions. The given equations represent the general transformations.

I hope this helps! Let me know if you have any further questions.