Assignment:
Calculate the standard enthalpy of formation of gaseous diborane, B2H6, using the following thermochemical information: (Hints: (i) Standard states of B2O3 and B are solid, (ii) Look carefully at equations 1 and 2 and what they describe)
Equa. 1. 4B(s) + 3O2(g) → 2B2O3(s) ΔH°1 = -2509.1 kJ
Equa. 2. 2H2(g) + O2(g) → 2H2O(l) ΔH°2 = -571.7 kJ
Equa. 3 B2H6(g) + 3O2(g) → B2O3(s) + 3H2O(l) ΔH°3 = -2147.5kJ
Provide complete and step by step solution for the question and show calculations and use formulas.