Question

A mixture of oxygen and ethyne is burnt for welding. Can u tell why a mixture of ethyne and air is not used ???????​

Answer 1

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a a mixture of acetylene ( ethyne) and Air is not used for welding because burning of acetylene( ethyne) in a air produces a sooty flame due to incomplete combustion, which is not enough to melt metals for welding.

↪if a mixture of acetylene and pure oxygen is burnt then acetylene burns completely producing a blue flame .

↪ the oxygen - acetylene (called oxy- acetylene flame ) is extremely hot and produces a very high temperature which is used for welding metals.

Answer 2

Answer:

When ethyne is burnt in air incomplete burning takes place and produce sooty flame due to limited supply oxygen present in the air. ... 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