Final answer:
a) 15 Acetylene becomes unstable at pressures above 15 psig, and it is crucial to keep it under this pressure in cylinders to prevent decomposition and ensure safety.
Step-by-step explanation:
Acetylene is unstable at pressures above 15 psig. At pressures higher than 15 psig, the risk of decomposition under certain conditions can increase significantly, potentially leading to dangerous situations.
Therefore, when acetylene is stored in cylinders, it is imperatively kept at low pressures to maintain safety. It is worth noting that the safety of gas storage and handling also relates to other factors, such as cylinder integrity and the presence of safety mechanisms.
Acetylene is unstable at pressures above 15 psig.
When acetylene is compressed to pressures of 15 psig or higher, it can become extremely sensitive to shock, friction, and ignition. This can lead to the risk of explosions and other safety hazards.
Therefore, it is important to handle acetylene gas with caution and ensure it is stored and transported at safe pressures.