How does the atomic hydrogen or oxy-hydrogen torch function for cutting and welding purposes ? Explain.
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As soon as the atoms of hydrogen come out of the electric arc, they reunite to form molecular hydrogen. As result of this, a large of heat, i.e. 458.5 KJ/mol is liberated. This amount of heat is enough to reach very high temperature in the range of 3500-4000oC, which is suitable for cutting and welding purposes.
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This energy can be used to generate a temperature of 4000 K, which is ideal for welding and cutting metals. Hence, atomic hydrogen or oxy-hydrogen torches are used for these purposes. For this reason, atomic hydrogen is allowed to recombine on the surface to be welded to generate the desired temperature.
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