Question

С какими из перечисленных веществ (KOH, K2O, HCl, CO2, SiO2, CuO, CuCl2, H2O)взаимодействуют:а) Na2Oб) NaOHв) H3PO4

Answer 1

А)Na2O+2HCl=2NaCL+H2O
Na2O+CO2=Na2CO3
Na2O+SiO2=Na2Si03
Na2O+H2O=2NaOH
б)NaOH+HCl=NaCL+H2O
2NaOH+CO2=Na2CO3+H2O
2NaOH+SiO2=Na2SiO3+H2O
в)H3PO4+3KOH=K3PO4+2H2O
2H3PO4+3K2O=2K3PO4+3H2O
2H3PO4+3CuO=Cu3(PO4)2+3H2O

Answer 2

Interactions of Substances

а) Na2O: Sodium oxide (Na2O) reacts with water to form sodium hydroxide (NaOH) according to the following equation: ``` Na2O + H2O -> 2NaOH ``` This reaction produces sodium hydroxide.

b) NaOH: Sodium hydroxide (NaOH) is a strong base and reacts with acids to form salts and water. For example, when NaOH reacts with hydrochloric acid (HCl), it forms sodium chloride (NaCl) and water: ``` NaOH + HCl -> NaCl + H2O ``` This reaction produces sodium chloride and water.

c) H3PO4: Phosphoric acid (H3PO4) is a tribasic acid, meaning it can donate three protons (H+ ions). When it reacts with sodium hydroxide (NaOH), it forms sodium phosphate and water: ``` 3NaOH + H3PO4 -> Na3PO4 + 3H2O ``` This reaction produces sodium phosphate and water.

These reactions demonstrate the interactions of the listed substances with each other.