Question

A mixture of oxygen and ethyne is burnt for welding can you tell why a mixture of ethyne is not used

Answer 1

mixture of oxygen and ethyne is used for this purpose bcoz it allows the metal to melt and produces high heat.

if ethyne is burnt in oxygen, it gives a clean flame with high temperature (3000°C ) due to complete combustion of ethyne. Hence, This oxy-acetylene flame is used for welding and it is not possible to attain such a high temperature with air. Due this reason a mixture of ethyne and air is not used for welding.

Answer 2

Answer:

• A mixture of oxygen and ethyne is burnt for welding instead of mixture of ethyne and air because the production of heat is very important for welding metals.
• When oxygen and ethyne are burnt, it burns completely and produces a higher temperature than air and ethyne.
• Oxygen and ethyne produce very hot blue flame but the mixture of air and ethyne gives out a sooty flame which means that there are unburnt particles resulting in lesser heat.