question_answer 1)

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

Answer:

Atomic hydrogen is produced when dihydrogen is passed through an electric arc established between tungsten electrodes. \[{{H}_{2}}\xrightarrow[arc]{Electric}2H;\,\,\,\,\,\Delta H=435.9kJ\,mo{{l}^{-1}}\] The life period of this form of hydrogen is only 0.3 seconds. It immediately recombines to form dihydrogen. In this process it liberates huge amount of heat energy. This heat energy is used for cutting and welding purposes either in the form of atomic hydrogen torch or oxy-hydrogen torch. The oxy- hydrogen torch produces about 4000K temperature.