Question

Write the balanced chemical equations forthe following {5}


1. Catalytic oxidation of ammonia


2. Action of hot and concentrated sodium hydroxide on aluminium oxide


3. Action of dilute HCl on sodium carbonate


4. Action of concentrated HCl on potassiumnitrate

5 Ammonium chloride is heated with slaked lime​

Answer 1

Answer:

Explanation:

1. Catalytic oxidation of Ammonia (1 vol.) with oxygen (9vol. of air) in Ostwald process for preparing nitric acid.

4NH 3  +5O2 Pt gauge  / 800−900^o  C 4NO+6H2O+  21.5 kcal

2.Reaction:

Al2 O3  +2NaOH→2NaAlO  2 +H2 O

3.Reaction:

NaHCO3 +HCl⟶NaCl+H2O+CO2

4.Reaction:

Potassium permanganate is heated with concentrated hydrochloric acid to form potassium chloride, manganese chloride and chlorine.

2KMn4 +16HCl→2KCl+2MnCl  2  +8H2O+5Cl 2

5.Reaction:

Laboratory preparation of ammonia from ammonium chloride:

2NH  4  Cl+Ca(OH)  2  →CaCl  2 +2H 2 O+2NH 3 ↑

Ammonium chloride is heated with base such as slaked lime. Ammonia gas is then dried with quick lime CaO.

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