Respuesta :
Answer:
Option A says we have 4 moles of Fe for each 3 moles O2
This is correct For 3 moles of O2 consumed, we need 4 moles of Fe to be reacted
Explanation:
Step 1: Data given
Step 2: The balanced equation
4Fe + 3O2 → 2Fe2O3
Step 3: Calculate the mol ratio
For 3 moles O2 we'll have 4 moles Fe
Option A says we have 4 moles of Fe for each 3 moles O2
This is correct For 3 moles of O2 consumed, we need 4 moles of Fe to be reacted
Option b says we have 2 mole Fe2O3 for each 4 moles Fe
This doesnt say anything about O2. So doesn't apply for this question.
Option C says we have 4 moles of Fe for each 2 moles Fe2O3
This is the same as option B, so doesn't apply for this question.
Option D says for each 3 moles of O2 we have 2 Fe2O3
This is true, but doesn't say anything about Fe so doesn't apply here.
Answer:
The correct answer is the first option: 4 mol Fe , 3 mol O2
Explanation:
Hello!
Let's solve this!
The reaction is:
4Fe + 3O2 ---> 2Fe2O3
This reads that every 4 moles of iron consumed, we need 3 moles of oxygen and when they react, we get 2 moles of Fe2O3.
Let's analyze each of the options:
4 mol Fe
3 mol O2: this is correct since it tells us how much iron and how much oxygen we need.
2 mol Fe2O3
4 mol Fe: it is not correct because it does not tell us anything about oxygen.
4 mol Fe
2 mol Fe2O3: it is not correct because it does not tell us anything about oxygen.
3 mol O2
2 mol Fe2O3: it is not correct because, although it says of oxygen, it does not relate it to iron.
We conclude that the correct answer is the first option: 4 mol Fe
3 mol O2
