Acetylene is dissolved into which substance?

Acetylene is dissolved into which substance?

• A. Water
• B. Acetone
• C. Ethanol
• D. Methanol

Answer: (B)

In welding practice, acetylene is stored dissolved in acetone inside cylinders to stabilize it under pressure. Acetylene gas alone is prone to dangerous decomposition when compressed, so dissolving it in a liquid solvent helps prevent that instability and allows safe, high‑pressure storage with a porous filler that holds the acetone–gas mixture. Acetone is chosen because it dissolves acetylene effectively and is chemically compatible with the cylinder components, providing a stable, safer storage medium. Water wouldn’t provide the same stabilization and can cause corrosion or poor solubility, while other alcohols aren’t used because they don’t offer the same safe, effective storage characteristics for acetylene in this application.

In welding practice, acetylene is stored dissolved in acetone inside cylinders to stabilize it under pressure. Acetylene gas alone is prone to dangerous decomposition when compressed, so dissolving it in a liquid solvent helps prevent that instability and allows safe, high‑pressure storage with a porous filler that holds the acetone–gas mixture. Acetone is chosen because it dissolves acetylene effectively and is chemically compatible with the cylinder components, providing a stable, safer storage medium. Water wouldn’t provide the same stabilization and can cause corrosion or poor solubility, while other alcohols aren’t used because they don’t offer the same safe, effective storage characteristics for acetylene in this application.