Write the reaction equation. 1) Be – BeO – BeCl2- Be (OH) 2 -Na2BeO2 2) N2- NH3- NO- NO2- KNO3- KNO2

а).

1.As a result of the reaction between beryllium and oxygen, beryllium oxide is formed.

2Be + O2 = 2 BeO.

2.As a result of the reaction between beryllium oxide and hydrochloric acid, beryllium chloride and water are formed.

BeO + 2HCl = BeCl2 + H2O.

3.As a result of the reaction between beryllium chloride and sodium hydroxide, beryllium hydroxide and sodium chloride are formed.

BeCl2 +2 NaOH = Be (OH) 2 + 2NaCl.

4.As a result of the reaction between beryllium hydroxide and sodium hydroxide, sodium beryllate and water are formed.

Be (OH) 2 + 2NaOH = Na2BeO2 + 2H2O

B).

1. The product of the reaction of nitrogen and hydrogen is ammonia.

N2 + 3H2 = 2NH3.

2. Ammonia, reacting with oxygen, forms nitric oxide (II) and water.

4NH3 + 5O2 = 4NO + 6H2O.

3. Nitrogen oxide (II), reacting with oxygen, forms nitrogen oxide (IV).

2NO + O2 = NO2.

3. Nitrogen oxide (IV), when dissolved in water, forms nitrous and nitric acids.

2NO2 + H2O = HNO2 + HNO3.

4.Nitric acid reacts with potassium hydroxide to form potassium nitrate and water.

HNO3 + KOH = KNO3 + H2O.

5.Potassium nitrate when decomposed forms potassium nitrite, and oxygen is released.

2KNO3 → 2KNO2 + O2.