Answers section
Questions 4.4.4 (d)
- Describe what is observed.
- Write the equation for the catalytic oxidation of ammonia.
- What is the evidence that the catalytic oidation is exothermic?
- Eplain the reaction that follows the catalytic oxidation of ammonia.
- Suggest how oxygen is prepared.
Answers to Questions 4.4.4 (d) 
- The wire continues to glow. Red brown fumes are produced.
- 4NH3(g) + 5O2(g) Ptatinum catalyst→ 6H2O(g) + 4NO(g)
- Continuing glow of the wire
- Further oidation of nitrogen (II) oxide by atmospheric oxygen to form nitrogen (IV) oxide.
- By decomposing hydrogen peroxide using manganese (IV) oxide as a catalyst.