Diborane is a potential rocket fuel which undergoes combustion according to the…

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Diborane is a potential rocket fuel which undergoes combustion according to the reaction, B2H6(g)+3O2(g)⟶B2O3(s)+3H2O(g)B_2H_6(g) + 3O_2(g) \longrightarrow B_2O_3(s) + 3H_2O(g) From the following data, calculate the enthalpy change for the combustion of diborane : 2B(s)+32O2(g)⟶B2O3(s);ΔH=−12732B(s) + \frac{3}{2}O_2(g) \longrightarrow B_2O_3(s); \quad \Delta H = -1273 kJ ... (1) H2(g)+12O2(g)⟶H2O(l);ΔH=−286H_2(g) + \frac{1}{2}O_2(g) \longrightarrow H_2O(l); \quad \Delta H = -286 kJ ... (2) H2O(l)⟶H2O(g);ΔH=44H_2O(l) \longrightarrow H_2O(g); \quad \Delta H = 44 kJ ... (3) 2B(s)+3H2(g)⟶B2H6(g);ΔH=362B(s) + 3H_2(g) \longrightarrow B_2H_6(g); \quad \Delta H = 36 kJ ... (4)

Related theory

Browse the problem library