How does the atomic hydrogen or oxy-hydrogen torch funtion for cutting and welding purposes? Explain.

Explanation

Atomic hydrogen is produced when molecular hydrogen is passed through an electric arc struck between tungsten electrodes at 3773 -4273 K .
`H_2 underset(3773-4273K)overset("Electric arc")to 2H " "Delta H= 435.9 KJ "mol"^(-1)`
The life time of atomic hydrogen is very very small (only 0.3 sec) and hence it immediately gets converted into molecular form by liberating a large amount of energy which may be used for cutting or welding purposes in the form of atomic hydrogen torch.