Ask Question
22 December, 01:33

Calculate the standard reaction free energy of the following chemical reaction:

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

+3
Answers (1)
  1. 22 December, 02:32
    0
    The question is incomplete, the complete question is:

    Calculate the standard enthalpy change for a reaction? : Fe2O3 (s) + 2Al (s) = Al2O3 (s) + 2Fe (s).

    The standard enthalpies of formation of Fe2O3 and Al2O3 are

    -822 and - 1669 KJ mol-1 respectively. State whether the reaction is exothermic or

    endothermic

    Answer:

    ∆H°reaction = - 847KJmol-1

    Explanation:

    Recall that ∆H°element = 0KJ mol-1

    Therefore

    ∆H°reaction = ∆H°products - ∆H°reactants

    = (-1669) - (-822) = - 847KJmol-1

    The reaction is exothermic as ∆H°reaction is negative.
Know the Answer?