Question

Câu 1 ) A / Mg(NO₃) \(\underrightarrow{\left(1\right)}\) Mg(OH)₂ \(\underrightarrow{\left(2\right)}\) MgCl_{2\(\underrightarrow{\left(3\right)}\) KCl} \(\underrightarrow{\left(4\right)}\) KNO₃

_{B/ \(Na\underrightarrow{\left(1\right)}Na_2O\underrightarrow{\left(2\right)}NaOH\underrightarrow{\left(3\right)}Na_2SO_4\underrightarrow{\left(4\right)}NaCl\underrightarrow{\left(5\right)}NaNO_3\underrightarrow{\left(6\right)}NaCl\underrightarrow{\left(7\right)}NaOH\)}

C/\(Mg\underrightarrow{\left(1\right)}MgO\underrightarrow{\left(2\right)}MgCl_2\underrightarrow{\left(3\right)}Mg\left(NO_3\right)_2\underrightarrow{\left(4\right)}Mg\left(OH\right)_2\underrightarrow{\left(5\right)}MgSO_4\underrightarrow{\left(6\right)}MgCO_3\)

D/\(CuSO_4\underrightarrow{\left(1\right)}Cu\left(OH\right)_2\underrightarrow{\left(2\right)}CuO\underrightarrow{\left(3\right)}CuCl_2\underrightarrow{\left(4\right)}Cu\left(OH\right)_2\underrightarrow{\left(5\right)}CuSO_4\)

E/\(CuCl_2\underrightarrow{\left(1\right)}Cu\left(OH\right)_2\underrightarrow{\left(2\right)}CuSO_4\underrightarrow{\left(3\right)}Cu\underrightarrow{\left(4\right)}CuO\)

F/ \(Cu\left(OH\right)_2\underrightarrow{\left(1\right)}CuO\underrightarrow{\left(2\right)}CuCl_2\underrightarrow{\left(3\right)}Cu\left(NO_3\right)_2\underrightarrow{\left(4\right)}NaNO_3\)

G/\(Fe_2O_3\underrightarrow{\left(1\right)}FeCl_3\underrightarrow{\left(2\right)}Fe\left(OH\right)_3\underrightarrow{\left(3\right)}Fe_2O_3\underrightarrow{\left(4\right)}Fe_2\left(SO_4\right)_3\)

H/ \(ZnCl_2\underrightarrow{\left(1\right)}Zn\left(OH\right)_2\underrightarrow{\left(2\right)}ZnCl_2\underrightarrow{\left(3\right)}NaCl\underrightarrow{\left(4\right)}NaNO_3\)

M/\(CuO\underrightarrow{\left(1\right)}CuCl_2\underrightarrow{\left(2\right)}Cu\left(OH\right)_2\underrightarrow{\left(3\right)}CuO\underrightarrow{\left(4\right)}CuSO_4\)

N/\(Fe\left(OH\right)_2\underrightarrow{\left(1\right)}FeO\underrightarrow{\left(2\right)}FeCl_2\underrightarrow{\left(3\right)}Fe\left(ỌH_2\right)\underrightarrow{\left(4\right)}FeSO_4\underrightarrow{\left(5\right)}FeCl_2\underrightarrow{\left(6\right)}Fe\left(NO_3\right)_2\)

Z/ \(Mg\left(OH\right)_2\underrightarrow{\left(1\right)}MgO\underrightarrow{\left(2\right)}MgSO_4\underrightarrow{\left(3\right)}MgCl_2\underrightarrow{\left(4\right)}Mg\left(OH\right)_2\underrightarrow{\left(5\right)}MgCl_2\underrightarrow{\left(6\right)}Mg\left(NO_3\right)_2\)

X/\(Al\left(OH\right)_3\underrightarrow{\left(1\right)}Al_2O_3\underrightarrow{\left(2\right)}AlCl_3\underrightarrow{\left(3\right)}Al\underrightarrow{\left(4\right)}Al_2\left(SO_4\right)_3\)

Answer 1

g) 1. Fe₂O₃ + 6HCl → 2FeCl₃ + 3H₂O

2. FeCl₃ + 3NaOH → 3NaCl + Fe(OH)₃↓

3. 2Fe(OH)₃ \(\underrightarrow{to}\) Fe₂O₃ + 3H₂O

4. Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O

Answer 2

h) 1. ZnCl₂ + 2NaOH → 2NaCl + Zn(OH)₂↓

2. Zn(OH)₂ + 2HCl → ZnCl₂ + 2H₂O

3. ZnCl₂ + 2NaOH → 2NaCl + Zn(OH)₂↓

4. NaCl + AgNO₃ → NaNO₃ + AgCl↓

Answer 3

m) 1. CuO + 2HCl → CuCl₂ + H₂O

2. CuCl₂ + 2NaOH → 2NaCl + Cu(OH)₂↓

3. Cu(OH)₂ \(\underrightarrow{to}\) CuO + H₂O

4. CuO + H₂SO₄ → CuSO₄ + H₂O

Answer 4

n) 1. Fe(OH)₂ \(\underrightarrow{to}\) FeO + H₂O

2. FeO + 2HCl → FeCl₂ + H₂O

3. FeCl₂ + 2NaOH → 2NaCl + Fe(OH)₂↓

4. Fe(OH)₂ + H₂SO₄ → FeSO₄ + 2H₂O

5. FeSO₄ + BaCl₂ → FeCl₂ + BaSO₄↓

6. FeCl₂ + 2AgNO₃ → Fe(NO₃)₂ + 2AgCl↓

Answer 5

z) 1. Mg(OH)₂ \(\underrightarrow{to}\) MgO + H₂O

2. MgO + H₂SO₄ → MgSO₄ + H₂O

3. MgSO₄ + BaCl₂ → MgCl₂ + BaSO₄↓

4. MgCl₂ + 2NaOH → 2NaCl + Mg(OH)₂↓

5. Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

6. MgCl₂ + 2AgNO₃ → Mg(NO₃)₂ + 2AgCl↓

Answer 6

x) 1. 2Al(OH)₃ \(\underrightarrow{to}\) Al₂O₃ + 3H₂O

2. Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂O

3. 2AlCl₃ + 3Mg → 3MgCl₂ + 2Al

4. 2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂↑

Answer 7

a) 1. Mg(NO₃)₂ + 2NaOH → 2NaNO₃ + Mg(OH)₂↓

2. Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

3. MgCl₂ + 2KOH → 2KCl + Mg(OH)₂↓

4. KCl + AgNO₃ → KNO₃ + AgCl↓

Answer 8

c) 1. 2Mg + O₂ \(\underrightarrow{to}\) 2MgO

2. MgO + 2HCl → MgCl₂ + H₂O

3. MgCl₂ + 2AgNO₃ → Mg(NO₃)₂ + 2AgCl↓

4. Mg(NO₃)₂ + 2NaOH → 2NaNO₃ + Mg(OH)₂↓

5. Mg(OH)₂ + H₂SO₄ → MgSO₄ + 2H₂O

6. MgSO₄ + Na₂CO₃ → Na₂SO₄ + MgCO₃

Answer 9

d) 1. CuSO₄ + 2NaOH → Na₂SO₄ + Cu(OH)₂↓

2. Cu(OH)₂ \(\underrightarrow{to}\) CuO + H₂O

3. CuO + 2HCl → CuCl₂ + H₂O

4. CuCl₂ + Ba(OH)₂ → BaCl₂ + Cu(OH)₂↓

5. Cu(OH)₂ + H₂SO₄ → CuSO₄ + 2H₂O

Answer 10

e) 1. CuCl₂ + 2NaOH → 2NaCl + Cu(OH)₂↓

2. Cu(OH)₂ + H₂SO₄ → CuSO₄ + 2H₂O

3. CuSO₄ + Fe → FeSO₄ + Cu

4. 2Cu + O₂ \(\underrightarrow{to}\) 2CuO

Answer 11

f) 1. Cu(OH)₂ \(\underrightarrow{to}\) CuO + H₂O

2. CuO + 2HCl → CuCl₂ + H₂O

3. CuCl₂ + 2AgNO₃ → Cu(NO₃)₂ + 2AgCl↓

4. Cu(NO₃)₂ + 2NaOH → 2NaNO₃ + Cu(OH)₂↓