Question

Give a reason for the following

Hydrogen finds the application in cutting and welding

Answer 1

• Hydrogen atoms are produced by the dissociation of dil. hydrogen with the help of an electric arc.
• This releases a huge amount of energy (435.88 kJ mol⁻¹). This energy can be used to generate a temperature of 4000 K, which is ideal for welding and cutting metals.
• Hence, atomic hydrogen is used for these purposes.
• For this reason, atomic hydrogen is allowed to recombine on the surface to be welded to generate the desired temperature.
• The Oxygen and hydrogen mixture leads to use in processing the factory materials.
• Because this flame becomes neutral and the flame increases the temperature.
• As both are combustible gases and help to combustion.
• Therefore, it is also used for cutting and welding.