What smoke is produced by a sulphur candle when exposed to ammonia fumes?

When a sulphur candle is exposed to ammonia fumes, the reaction produces white smoke, primarily in the form of ammonium sulfate. This occurs because the ammonia gas reacts with the sulfur dioxide released from the burning sulphur, forming a solid particulate that appears as white smoke.

The white smoke indicates the presence and reaction of sulfur and ammonia, making it a significant indicator in various laboratory and industrial settings. It is important to identify the smoke produced, as it can reveal the chemical interactions taking place and serve as a safety or monitoring measure in environments where these substances are present.

Understanding the properties of the gases involved and the typical reactions that occur can help in identifying the correct outcomes in chemical processes, thus reinforcing the need to recognize the significance of such observations in power engineering contexts where gas interactions may be relevant.