I am looking for some help with Chemistry specificaly limiting reagent and stoic
ID: 868742 • Letter: I
Question
I am looking for some help with Chemistry specificaly limiting reagent and stoiciometry
I need a step by step response please.
3Fe2O3+CO--->2Fe3O4+CO2
If 125g of Fe2O3 and 125 g of CO react in this first step, determine the limiting reagent and the mass in grams of each product formed. Also determine the mass in grams of excess reagent that reacts and the mass in grams of excess reagent that remains after the reaction is complete.
Here are some calculations already done for you to help you get it done faster
Molar masses.
Fe2O3=159.7g CO=28.01g Fe3O4=231.5g CO2=44.01
Explanation / Answer
Given masses Molar Mass
Fe2O3 125 g 159.7 g
CO 125 g 28.01 g
Fe3O4 ? 231.5 g
CO2 ? 44.01 g
Number of moles = Mass / Molar mass
Moles of 3 x Fe2O4 = 3 x 125/159.07 = 3 x 0.785 = 2.355 moles
Moles of CO = 125/28.01 = 4.462 moles
*Since CO is in abundance, Fe2O3 is the limiting reagent.
So, 2 x 0.785 = 1.57 moles of Fe3O4
and 0.785 moles of CO2 are produced
Masses of products:
Mass = number of moles x molar mass
Mass of Fe3O4 = 1.57 x 231.5 = 363.4 g
Mass of CO2 = 0.785 x 44.01 = 34.5 g
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