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.
