Question

References Use the References to access important values If needed for this question. A scientist measures the standard enthalpy change for the following reaction to be -913.8 kJ : Fe2O3(s) + 2 Al(s) A12O3(s) + 2 Fe(s) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of AlzO3(s) is kJ/mol. Submit Answer

Answer 1

Standard enthalpies of formation AH [Fe2O3(s)] - 824,2 kJ molt AH Calis)) = okJ/mol SHO [Al2O315)] = ? IHO I fels)] = OKTlmol Horn - standard enthalpy change for reaction stinn = -913,8 kJ molt sHorn = ohi (Products ) - EoHo (Reactants) ILO Nouns SH Al2O3(s)) + 2 x AH [feis)) - SHi I Fez Us Isl] - 2X DHA (Al(s) ] - - 913,8K) molt = AHO [A1203(s) ] + 2YO KI molt - (-824,2) KI molt - 2 x okJmol > SH (Al2 0.313)] = - 1738 kJ mor! Al Osis) is - 1738 kJ molt Hence, the standard enthalpy of formation of Please Rate