How is an accidental ammonia gas leak detected within an industrial refrigeration system_________________?
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Answer: A. Sulphur stick, which on detection gives white smoke
Explanation
A burning sulphur stick reacts with leaking ammonia gas to form dense white fumes. These white fumes consist of solid ammonium chloride particles confirming the location of the leak. Industrial facilities rely on this classic chemical reaction because it provides immediate visual confirmation. Ammonia is a pungent and highly toxic alkaline gas commonly used in large refrigeration systems. When gaseous ammonia comes into contact with hydrogen chloride or acidic vapors, a precipitation reaction occurs. The chemical equation for this visible reaction involves ammonia combining with hydrochloric acid from the stick.
Safety technicians perform routine inspections on industrial piping valves to ensure facility safety. Detecting microscopic cracks early prevents catastrophic toxic releases in commercial cold storage facilities. Plant operators must maintain proper safety gear when investigating potential pressurized chemical leaks. Using chemical reagents requires elaborate sampling equipment rather than a simple hand-held testing stick. Relying solely on human smell is extremely dangerous because high concentrations of ammonia paralyze olfactory nerves. Soap solution is traditionally used for detecting high-pressure leaks of air or non-reactive refrigerant gases.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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