Why a mixture of oxygen and acetylene burns with a much hotter flame than a mixture of air acetylene?

If there’s one thing you must remember about oxygen, it’s that things burn much faster in pure oxygen (or even in a mixture of half oxygen, half nitrogen) than they do in air. The triple bond is the reason why the oxy-acetylene flame is hotter than the flame produced by burning any other hydrocarbon gas with oxygen.

Why is oxygen mixed with acetylene for soldering and brazing?

Use oxygen/acetylene with care— the higher flame temperature, especially close to the inner cone, can quickly melt the aluminum tube. Air/acetylene’s lower heat input and wider flame pattern often makes this job easier.

Why is acetylene used with oxygen for fusion welding?

Acetylene produces a flame temperature of ~3100 degree Celsius along with oxygen. This high flame temperature makes acetylene a suitable choice for gas welding steel. 2. Welding: When burned in oxygen, acetylene produces a reducing zone, which easily cleans the metal surface.

What happens when you mix oxygen and acetylene?

What’s special about acetylene? Oxygen and acetylene together (oxy-acetylene) produces a flame temperature of 3150 °C, making it the hottest of all the fuel gases and the only fuel gas that can weld steel. In cutting, acetylene gives the fastest pre-heating and piercing times of any of the other fuel gas combinations.

Why acetylene burns at a lower temperature if oxygen is replaced with air?

Explanation: Acetylene being an unsaturated hydrocarbon, burns incompletely in air due to which a sooty flame is produced with very low temperature.

How does oxygen affect the burning of acetylene?

In the presence of a flame, acetylene reacts with oxygen to form carbon dioxide and water.

Why is oxygen used with acetylene?

Oxygen is used by animals and plants in the respiration (breathing) process. Tanks of oxygen are used in medicine to treat people with breathing problems. They are also used as life support for astronauts and scuba divers. The majority of the oxygen used in industry is used in the manufacturing of steel.

Why is oxygen used in welding?

Pure oxygen, instead of air, is used to increase the flame temperature to allow localized melting of the workpiece material (e.g. steel) in a room environment. Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal.

Why is acetylene used?

Acetylene is used for welding and cutting. The welding process that uses acetylene is known as oxy-fuel cutting or gas cutting. Among all other gases, acetylene is capable of producing the hottest flame. For this reason, acetylene serves as an important medium for heat treating metals and other materials.