Question

Write two physical properties of ethyne.

Write the physical properties of ethyne.

Answer 1

• Physical state: It is a colourless gas.
• Odour: It has an ether-like smell due to the presence of phosphine and hydrogen sulphide as impurities.
• Solubility: Being non-polar, it is insoluble in water but readily dissolves in organic solvents such as acetone, benzene, alcohol, etc.
• Melting point: It liquefies at −84°C.
• Boiling point: Its boiling point is −75°C.
• Density: It is lighter than air and its vapour density is 13.