Question

Why do containers for bottled gas need to be very strong?

A) To prevent leaks.
B) To keep the gas fresh.
C) To maintain pressure.
D) To make them easy to carry.

Answer 1

Containers for bottled gas need to be very strong to maintain pressure and prevent rupture, especially under conditions where the gas expands due to temperature increases or additional gas being added to the container.

Step-by-step explanation:

The reason containers for bottled gas need to be very strong is primarily to maintain pressure. Gas molecules have lots of empty space between them, making them highly compressible. In a sealed container, like those used to store carbon dioxide for carbonated beverages or for other gases used in various applications, the gas is under high pressure. Applying pressure compresses the gas into a smaller volume, and the container must withstand this pressure without leaking or bursting. Moreover, in the event of a temperature increase, such as in a fire, the pressure inside the container can rise dramatically. Strong containers are designed to have a safety factor that prevents them from failing even when under extreme conditions. For instance, a gas cylinder storing gas at 200 atmospheres is designed with a safety factor, able to withstand up to 400 atmospheres. If the pressure rises too much due to heat, the cylinder might fail. Thus, it is crucial for these containers to be robust to prevent rupture and maintain the integrity of the stored gas, preventing leaks and potential hazards.