Question 1Preparation of hydrogen[General Methods] Reactions of active metals - cold water 1. PotassiumK + H2O ⟶ ............... + ............... [g]2. SodiumNa + H2O ⟶ ............... + ............... [g]3. CalciumCa + H2O ⟶ ............... + ............... [g]Reaction of metals with steam 4. MagnesiumMg + H2O ⟶ ............... + ............... [g]5. AluminiumAl + H2O ⟶ ............... + ............... [g]6. ZincZn + H2O ⟶ ............... + ............... [g]7. IronFe + H2O ⇌ ............... + ............... [g]Reactions of metals with dilute acids 8. MagnesiumMg + HCl ⟶ ............... + ............... [g]9. AluminiumAl + H2SO4 ⟶ ............... + ............... [g]10. ZincZn + HCl ⟶ ............... + ............... [g]11. IronFe + HCl ⟶ ............... + ............... [g]Reactions of metals - alkali [conc. soln.] 12. ZincZn + NaOH ⟶ ............... + ............... [g]Zn + KOH ⟶ ............... + ............... [g]13. LeadPb + NaOH ⟶ ............... + ............... [g]14. AluminiumAl + NaOH + H2O ⟶ ............... + ............... [g]Al + KOH + H2O ⟶ ............... + ............... [g]

Question

Question 1Preparation of hydrogen[General Methods]  Reactions of active metals - cold water  1. PotassiumK + H2O ⟶ ............... + ............... [g]2. SodiumNa + H2O ⟶ ............... + ............... [g]3. CalciumCa + H2O ⟶ ............... + ............... [g]Reaction of metals with steam  4. MagnesiumMg + H2O ⟶ ............... + ............... [g]5. AluminiumAl + H2O ⟶ ............... + ............... [g]6. ZincZn + H2O ⟶ ............... + ............... [g]7. IronFe + H2O ⇌ ............... + ............... [g]Reactions of metals with dilute acids  8. MagnesiumMg + HCl ⟶ ............... + ............... [g]9. AluminiumAl + H2SO4 ⟶ ............... + ............... [g]10. ZincZn + HCl ⟶ ............... + ............... [g]11. IronFe + HCl ⟶ ............... + ............... [g]Reactions of metals - alkali [conc. soln.]  12. ZincZn + NaOH ⟶ ............... + ............... [g]Zn + KOH ⟶ ............... + ............... [g]13. LeadPb + NaOH ⟶ ............... + ............... [g]14. AluminiumAl + NaOH + H2O ⟶ ............... + ............... [g]Al + KOH + H2O ⟶ ............... + ............... [g]

Accepted Answer

Preparation of hydrogen[General Methods]  Reactions of active metals - cold water  1. Potassium2K + 2H2O ⟶ 2KOH + H2 [g]2. Sodium2Na + 2H2O ⟶ 2NaOH + H2 [g]3. CalciumCa + 2H2O ⟶ Ca(OH)2 + H2 [g]Reaction of metals with steam  4. MagnesiumMg + H2O ⟶ MgO + H2 [g]5. Aluminium2Al + 3H2O ⟶ Al2O3 + 3H2 [g]6. ZincZn + H2O ⟶ ZnO + H2 [g]7. Iron3Fe + 4H2O ⇌ Fe3O4 + 4H2 [g]Reactions of metals with dilute acids  8. MagnesiumMg + 2HCl⟶ MgCl2 + H2 [g]9. Aluminium2Al + 3H2SO4 ⟶ Al2(SO4)3 + 3H2 [g]10. ZincZn + H2SO4 ⟶ ZnSO4 + H2 [g]11. IronFe + 2HCl ⟶ FeCl2 + H2 [g]Reactions of metals - alkali [conc. soln.]  12. ZincZn + 2NaOH ⟶ Na2ZnO2 + H2 [g]Zn + 2KOH ⟶ K2ZnO2 + H2 [g]13. LeadPb + 2NaOH ⟶ Na2PbO2 + H2 [g]14. Aluminium2Al+ 2NaOH + 2H2O ⟶ 2NaAlO2 + 3H2 [g]2Al + 2KOH + 2H2O ⟶ 2KAlO2 + 3H2 [g]

Preparation of hydrogen [General Methods]
Reactions of active metals - cold water
1. Potassium	2K + 2H₂O ⟶ *2KOH* + H₂ [g]
2. Sodium	2Na + 2H₂O ⟶ *2NaOH* + H₂ [g]
3. Calcium	Ca + 2H₂O ⟶ *Ca(OH)₂* + H₂ [g]
Reaction of metals with steam
4. Magnesium	Mg + H₂O ⟶ *MgO* + H₂ [g]
5. Aluminium	2Al + 3H₂O ⟶ *Al₂O₃* + *3H₂* [g]
6. Zinc	Zn + H₂O ⟶ *ZnO* + H₂ [g]
7. Iron	3Fe + 4H₂O ⇌ *Fe₃O₄* + *4H₂* [g]
Reactions of metals with dilute acids
8. Magnesium	Mg + 2HCl⟶ *MgCl₂* + H₂ [g]
9. Aluminium	2Al + 3H₂SO₄ ⟶ *Al₂(SO₄)₃* + *3H₂* [g]
10. Zinc	Zn + H₂SO₄ ⟶ *ZnSO₄* + H₂ [g]
11. Iron	Fe + 2HCl ⟶ *FeCl₂* + H₂ [g]
Reactions of metals - alkali [conc. soln.]
12. Zinc	Zn + 2NaOH ⟶ *Na₂ZnO₂* + H₂ [g] Zn + 2KOH ⟶ *K₂ZnO₂* + H₂ [g]
13. Lead	Pb + 2NaOH ⟶ *Na₂PbO₂* + H₂ [g]
14. Aluminium	2Al+ 2NaOH + 2H₂O ⟶ *2NaAlO₂* + *3H₂* [g] 2Al + 2KOH + 2H₂O ⟶ *2KAlO₂* + 3H₂ [g]

Preparation of hydrogen [General Methods]
Reactions of active metals - cold water
1. Potassium	K + H₂O ⟶ ............... + ............... [g]
2. Sodium	Na + H₂O ⟶ ............... + ............... [g]
3. Calcium	Ca + H₂O ⟶ ............... + ............... [g]
Reaction of metals with steam
4. Magnesium	Mg + H₂O ⟶ ............... + ............... [g]
5. Aluminium	Al + H₂O ⟶ ............... + ............... [g]
6. Zinc	Zn + H₂O ⟶ ............... + ............... [g]
7. Iron	Fe + H₂O ⇌ ............... + ............... [g]
Reactions of metals with dilute acids
8. Magnesium	Mg + HCl ⟶ ............... + ............... [g]
9. Aluminium	Al + H₂SO₄ ⟶ ............... + ............... [g]
10. Zinc	Zn + HCl ⟶ ............... + ............... [g]
11. Iron	Fe + HCl ⟶ ............... + ............... [g]
Reactions of metals - alkali [conc. soln.]
12. Zinc	Zn + NaOH ⟶ ............... + ............... [g] Zn + KOH ⟶ ............... + ............... [g]
13. Lead	Pb + NaOH ⟶ ............... + ............... [g]
14. Aluminium	Al + NaOH + H₂O ⟶ ............... + ............... [g] Al + KOH + H₂O ⟶ ............... + ............... [g]

Study of the First Element — Hydrogen — Question 1

Question 1