Carry out the transformations: barium – barium oxide – barium hydroxide – barium phosphate silicon – silicon (IV) oxide

Carry out the transformations: barium – barium oxide – barium hydroxide – barium phosphate silicon – silicon (IV) oxide – barium silicate beryllium chloride – beryllium oxide – beryllium hydroxide

1) Barium → Barium Oxide → Barium Hydroxide → Barium Phosphate

Ba → BaO → Ba (OH) 2 → Ba3 (PO4) 2

1) 2Ba + O2 → 2BaO;

2) BaO + Ca (OH) 2 ↓ → Ba (OH) 2 ↓ + CaO;

3) 3Ba (OH) 2 ↓ + 2H3PO4 → Ba3 (PO4) 2 ↓ + 6H2O.

2) Silicon → silicon (IV) oxide → barium silicate

Si → SiO2 → BaSiO3

1) Si + O2 → SiO2;

2) SiO2 + BaO → BaSiO3.

3) Beryllium chloride → beryllium oxide → beryllium hydroxide

BeCl2 → BeO → Be (OH) 2

1) BeCl2 + Na2O → BeO + 2NaCl;

2) BeO + H2O → Be (OH) 2.