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Calculate the standard enthalpy of formation of solid diboron trioxide (B2O3) using the following thermochemical information:

B2O3(s) + 3 H2O(l) B2H6(g) + 3 O2(g) H = +2147.5 kJ

2 H2(g) + O2(g) 2 H2O(l) H = -571.7 kJ

2 B(s) + 3 H2(g) B2H6(g) H = +35.4 kJ

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Category:- Chemistry
Reference No.:- M9864611

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