a mixture of Oxygen and ethyne is burnt for welding can you tell why a mixture of Ethane and air is not used
Answers
Answer:
Ethyne is an unsaturated hydrocarbon. On combustion in air, it produces a yellow flame with lots of black smoke. ii. Due to this incomplete combustion, heat produced is low and temperature obtained is also low. iii. For welding purposes,high temperature is required. iv. When a mixture of ethyne and oxygen is used, complete combustion is achieved and very high temperature required for welding is obtained. Hence, a mixture of ethyne and oxygen is used for welding instead of a mixture of ethyne and air.
When ethyne is burnt in air incomplete supply oxygen present in the air. However, 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.