Chemistry · Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions
Aluminothermy used for the spot welding of large iron structures is based upon t
Aluminothermy used for the spot welding of large iron structures is based upon the fact that: This question has multiple correct options
- A. As compared to iron, aluminium has greater affinity for oxygen.
- B. As compared to aluminium, iron has greater affinity for oxygen.
- C. Reaction between aluminium and oxygen is endothermic.
- D. Reaction between iron oxide and aluminium is exothermic.
Step-by-step solution
Aluminothermy involves the reduction of iron oxide by aluminium, which occurs because aluminium has a higher affinity for oxygen than iron. This results in an exothermic reaction that produces molten iron for welding.
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