Question

How much energy is evolved during the formation of 98.7 g of Fe, according to the reaction below?

Fe2O3(s) + 2 Al(s) → Al2O3(s) + 2 Fe(s)

ΔH°rxn = -852 kJ



A. 482 kJ
B. 753 kJ
C. 1.51 × 10ee3 kJ
D. 4.20 × 10ee3 kJ

Answer 1

the molar mass of Fe is 55.8 g

[98.7 / (2 * 55.8)] * 852 kJ

Answer 2

B. 753