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JAMB Chemistry 2016 Paper

Question : 34

Total: 50

In the extraction of iron, the waste gas from the furnace is a mixture of

PH₃ CO and CO₂
CO and C
N₂ , CO and CO₂
PH₃ and CO

Solution:

the $N_2$ from the hot air blast to burn the coke (48%), the $CO$ (23%) and $CO_2$ (21%) produced from the reduction of the iron ore $Fe_{2}O_{3}$ by carbon (the coke) are the major components of the waste from the extraction.

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