What chemical can be used to identify a chlorine gas leak, and what color will the gas produced be?

Ammonia is a compound that can be used to identify a chlorine gas leak. When chlorine gas reacts with ammonia, it forms chloramine, which can produce a white cloud or mist. This characteristic visibility allows operators to quickly identify the presence of chlorine gas, which is crucial for maintaining safety in wastewater treatment facilities.

The color produced in this reaction, which is white, signifies the presence of chloramine and serves as a warning sign for potential exposure to chlorine gas. Recognizing this is essential for ensuring the safety of operations and implementing appropriate safety measures promptly.