Why is it so, if ethyne is burnt for welding purposes with air, instead of Oxygen, it gives incomplete combustion. Explain in detail.

Asked by  | 26th Jan, 2012, 02:12: PM

Expert Answer:

When ethyne is burnt in air, it gives a sooty flame. This is due to incomplete combustion caused by limited supply of air. However, if ethyne is burnt with oxygen, it gives a clean flame with temperature 3000°C because of complete combustion. This oxy-acetylene flame is used for welding. It is not possible to attain such a high temperature without mixing oxygen. This is the reason why a mixture of ethyne and air is not used.

Answered by  | 26th Jan, 2012, 09:08: PM

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