Chemistry, 08.04.2020 01:33 imeldachavez124
He thermite reaction, in which powdered aluminum reacts with iron(III) oxide, is highly exothermic. 2 Al(s) + Fe2O3(s) Al2O3(s) + 2 Fe(s) Use standard enthalpies of formation to find for the thermite reaction
Answers: 3
. Use standard enthalpies of formation to find ΔH∘rxn for the thermite reaction. Express the heat of the reaction in kilojoules to four significant figures.
.
![\Delta H^o=[n_{Fe}\times \Delta H_f^0_{(Fe)}+n_{Al_2O_3}\times \Delta H_f^0_{(Al_2O_3)}]-[n_{Al}\times \Delta H_f^0_(Al)+n_{Fe_2O_3}\times \Delta H_f^0_{(Fe_2O_3)}]](/tpl/images/0588/4390/ac2a9.png)
![\Delta H^o_{rxn}=[(2\times 0)+(1\times -1675.5)]-[(2\times 0)+(1\times -824.2)]=-851.5kJ](/tpl/images/0588/4390/65523.png)
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He thermite reaction, in which powdered aluminum reacts with iron(III) oxide, is highly exothermic....
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