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The thermite reaction was used to produce molten iron for welding applications before arc welding was available.
The thermite reaction is:
Fe2O3(s)+2Al(s)→Al2O3(s)+2Fe(l)
How many moles of molten iron can be produced from 1.7 kg of iron(III) oxide?
Use unit of substance

Respuesta :

21.2912 moles of molten iron will be produced from 1.7 kg of Fe203.

Explanation:

From the equation:

Fe2O3(s)+2Al(s)→Al2O3(s)+2Fe(l)

it is found that 1 mole of Fe203 will undergo thermite reaction to yield 2 moles of molten iron.

The weight of Fe203 given is 1.7 kg OR 1700 Grams

The atomic weight of the Fe2O3= 159.69

Number of moles can be calculated as= 1700/159.69

                                                                  =  10.64 moles of Fe2O3

So, from stochiometry,

1 mole Fe2O3 yield 2 moles of Fe

so 10.64 moles will yield x mole of Fe

2/1=x/10.64

x= 21.2912 moles

Thus, 21.2912 moles of molten iron will be produced from 1.7 kg of Fe203.

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