Write the reaction equations a) Sodium – Sodium hydroxide – Sodium sulfide – Sodium chloride – Sodium sulfate

Write the reaction equations a) Sodium – Sodium hydroxide – Sodium sulfide – Sodium chloride – Sodium sulfate b) Magnesium – Magnesium sulfate – Magnesium hydroxide – Magnesium oxide – Magnesium chloride c) Lead – Lead (II) oxide – Lead (II) nitrate – Hydroxide lead (II) – Lead (II) oxide – Lead (II) sulfate g) Sulfur – Hydrogen sulfide – Stone sulfate – Stone chloride – Hydrochloric acid

a) Sodium → Sodium hydroxide → Sodium sulfide → Sodium chloride → Sodium sulfate

Na → NaOH → Na2S → NaCl → Na2SO4

1) 2Na + 2H2O → 2NaOH + H2 ↑;

2) H2S + 2NaOH → Na2S + 2H2O;

3) Na2S + 2HCl → H2S ↑ + 2NaCl;

4) 2NaCl + H2SO4 → Na2SO4 + 2HCl ↑.

b) Magnesium → Magnesium sulfate → Magnesium hydroxide → Magnesium oxide → Magnesium chloride

Mg → MgSO4 → Mg (OH) 2 → MgO → MgCl2

1) Mg + H2SO4 → MgSO4 + H2 ↑;

2) MgSO4 + 2NaOH → Mg (OH) 2 ↓ + Na2SO4;

3) Mg (OH) 2 ↓ → MgO + H2O;

4) MgO + 2HCl → MgCl2 + H2O.

c) Lead → Lead (II) oxide → Lead (II) nitrate → Lead (II) hydroxide → Lead (II) oxide → Lead (II) sulfate

Pb → PbO → Pb (NO3) 2 → Pb (OH) 2 → PbO → PbSO4

1) 2Pb + O2 → 2PbO;

2) PbO + 2HNO3 → Pb (NO3) 2 + H2O;

3) Pb (NO3) 2 + 2NaOH → 2NaNO3 + Pb (OH) 2 ↓;

4) Pb (OH) 2 ↓ → PbO + H2O;

5) PbO + H2SO4 → PbSO4 ↓ + H2O.

d) Sulfur → Hydrogen sulfide → Potassium sulfate → Potassium chloride → Hydrochloric acid

S → H2S → K2SO4 → KCl → HCl

1) S + H2 → H2S ↑;

2) H2SO4 + 2KOH → K2SO4 + 2H2O;

3) K2SO4 + 2HCl → 2KCl + H2SO4 ↑;

4) 2KCl + H2SO4 → K2SO4 + 2HCl ↑.