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    Chemistry Study Set 2
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    Exam 6: Thermochemistry
  5. Question
    Given 2Al(s)+ (3/2)O<sub>2</sub>(g)\(\rarr\) Al<sub>2</sub>O<sub>3</sub>(s)\(\Delta\) H°<sub>f</sub> = -1,670 KJ/mol for Al<sub>2</sub>O<sub>3</sub> (S)
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Given 2Al(s)+ (3/2)O2(g) →\rarr→ Al2O3(s) Δ\DeltaΔ H°f = -1,670 KJ/mol for Al2O3 (S)

Question 84

Question 84

Multiple Choice

Given 2Al(s) + (3/2) O2(g) →\rarr→ Al2O3(s) , Δ\DeltaΔ H°f = -1,670 kJ/mol for Al2O3 (s) . Determine Δ\DeltaΔ H° for the reaction 2Al2O3(s) →\rarr→ 4Al(s) + 3O2(g) .


A) -3,340 kJ/mol
B) -1,670 kJ/mol
C) -835 kJ/mol
D) 1,670 kJ/mol
E) 3,340 kJ/mol

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