Question

In a very violent reaction called a thermite reaction, aluminum metal reacts with iron (III) oxide to form iron metal and aluminum oxide according to the following equation:

Answer 1

The subject of this question is Chemistry, specifically the thermite reaction between aluminum metal and iron (III) oxide. This highly exothermic reaction produces heat that can melt steel and is often used in welding. The balanced chemical equation for this reaction is 2 Al(s) + Fe₂O₃(s) → 2 Fe(s) + Al₂O₃(s).

Step-by-step explanation:

The subject of this question is Chemistry. Specifically, it relates to the thermite reaction between aluminum metal and iron (III) oxide.

In this reaction, powdered aluminum reacts with iron (III) oxide to form iron metal and aluminum oxide. The balanced chemical equation for this reaction is: 2 Al(s) + Fe₂O₃ (s) → 2 Fe(s) + Al₂O₃(s).

This reaction is highly exothermic, producing a large amount of heat, which is enough to melt steel. It is often used for welding railroad tracks together due to its ability to generate such high temperatures.

Answer 2

Here's the equation:
Fe2 O3 + 2Al → 2Fe + Al2 O3

Here's the question.
What mass of Al will react with 150g of Fe2 O3?

In every 2 moles Al you need 1 mole Fe2O3

moles = mass / molar mass
moles Fe2O3 = 150 g / 159.69 g/mol
= 0.9393 moles

moles Al needed = 2 x moles Fe2O3
= 2 x 0.9393 mol
= 1.879 moles Al needed

mass = molar mass x moles
mass Al = 26.98 g/mol x 1.879 mol
= 50.69 g
= 51 g (2 sig figs)

So the mass of Al that will react with 150g of Fe2 O3 is 51 grams.