The standard change in enthalpy at 142oC for the following two reactions are, respectively, -23.44 and 94.67 kJ.
[1] 4 X(s) + 3 O2(g) + 2 H2O(l) ? 4 HXO2(g)
[2] H2O(l) + O2(g) + X(s) ? H2XO3(g)
What is the standard enthalpy change at 142oC for the following reaction ?
4 H2XO3(g) ? 4 HXO2(g) + 2 H2O(l) + O2(g)