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Explain the reaction of ammonia with air in the presence of platinum wire.

Explain the reaction of ammonia with air in the presence of platinum wire.

Answers

Kavungya
Procedure:
- Concentrated ammonia solution is put in a conical flask.
- The platinum (or even copper) wire is heated until white-hot.
- Oxygen gas or air is then passed through the ammonia solution.
- The red-hot platinum (copper) wire is then put into the flask containing the concentrated ammonia.

Observations:
- The hot platinum wire glows.
- Red-brown fumes are evolved.

Explanations:
- The hot platinum coil glows when it comes into contact with the ammonia fumes, which come from the concentrated ammonia solution.
- Reaction between ammonia and oxygen takes place on the surface of the platinum wire that acts a s a catalyst.
- A lot of heat is produced in the reaction that enables the platinum coil to continue glowing.
- Ammonia is oxidized to nitrogen (IV) oxide.
Kavungya answered the question on April 30, 2019 at 10:15

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