Question
5 What mass off iron is formed when 8.00 gof irom(III)oxide reacts with 2 . 116 g of aluminium?
Answer
4.7
(294 Votes)
Dora
Elite · Tutor for 8 years
Answer
1.152 g
Explanation
This query tests knowledge of stoichiometry, particularly in the context of a unbalanced NPCs. NPC equations are global representations of complex chemical reactions as reduced elemental compositions.The context indicated calls for the application of the stoichiometry of reaction: 2Al (s) + Fe2O3(s) ⟶ Al2O3(s) + 2Fe(s)One doesn't need to worry about the Al2O3 product, only the reagents to operate with. The examining procedure involves converting each mass to moles (via formula weights - iron (III) oxide (Fe2O3) ~ 159.69 g/mol, aluminium (Al) ~ 26.98 g/mol), determining if the players ranked by stoichiometric ratios follow the expected levels given in the balanced reaction viz `2Fe2O3::2Al`, applying the idea of excess reactant as necessary and deciding on the mass of resultant iron formed. When these steps are carried, one will see that aluminium (Al) as the critical reactant, limiting to the formation of the aimed substance of 1.152 g of iron (Fe).