A mixture of O2 and ethyne is used for welding purpose. Can you tell why a mixture of ethyne and air is not used?

Asked by subbukum | 4th Feb, 2020, 11:46: AM

Expert Answer:

Mixture of ethyne and air cannot be used due to hazard  associated with ethyne's intrinsic instability; samples of concentrated or pure acetyle will explosively decompose in air. Acetylene can explode with extreme violence if the pressure of the gas exceeds about 200 kPa (≈39 psi) as a gas  or when in liquid or solid form.

Answered by Ramandeep | 5th Feb, 2020, 12:47: PM