Diborane (B2H6(g)) is a highly reactive boron hydride, which was at one time considered as a possible rocket fuel for the US space program. Write a balanced thermochemical equation for the formation of diborane from the elements using the following information:   2 B(s) + 3/2 O2(g) ---> B2O3(s)                                  ΔH = -1273 kJ/rxn B2H6(g) + 3 O2(g) ---> B2O3(s) + 3 H2O(g)                    ΔH = -2035 kJ/rxn H2(g) + 1/2 O2(g) ---> H2O(l)                                     ΔH = -286 kJ/rxn H2O(l) ---> H2O(g)                                                    ΔH =  +44 kJ/rxn

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Chapter6: Thermochemisty
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Diborane (B2H6(g)) is a highly reactive boron hydride, which was at one time considered as a possible rocket fuel for the US space program. Write a balanced thermochemical equation for the formation of diborane from the elements using the following information:

 

2 B(s) + 3/2 O2(g) ---> B2O3(s)                                  ΔH = -1273 kJ/rxn

B2H6(g) + 3 O2(g) ---> B2O3(s) + 3 H2O(g)                    ΔH = -2035 kJ/rxn

H2(g) + 1/2 O2(g) ---> H2O(l)                                     ΔH = -286 kJ/rxn

H2O(l) ---> H2O(g)                                                    ΔH =  +44 kJ/rxn

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