Answer:
Aluminium + Dioxygen = Ruby
Reaction Type
Synthesis
Redox (Oxidation-Reduction) Reaction Beta
Al + O2 = Al2O3 might be a redox reaction.
Reactants
Aluminium - Al
13Al Aluminum Element 13
Dioxygen - O2
Lox O₂ Oxygen Oxygen Gas Liquid Oxygen Triplet Oxygen Diatomic Oxygen Molecular Oxygen O2 Bond Polarity
Products
Ruby - Al2O3
Al2O3 Molar Mass Al2O3 Oxidation Number
Exothermic or Endothermic?
Al(s) 4 mol 0 kJ/mol 0 kJ
O2(g) 3 mol 0 kJ/mol 0 kJ
Al2O3(s) 2 mol -1669.8 kJ/mol -3339.6 kJ
ΔH°rxn -3339.6 kJ
ΣΔH°f(reactants) > ΣΔH°f(products), so the reaction is exothermic.
Step-by-step explanation: