Question

The enthalpies of formation of al2o3 and cr2o3 are -1596kj and -1134kj respectively delth for the reaction 2al+cr2o3 -> 2cr +al2o3 is

Answer 1

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Given that: 2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821 kJ/mol Calculate the standard enthalpy change for the following reaction: 2Al(s)+Fe2O3(s)--->2Fe(s)+Al2O3(s) _______kJ

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