Diborane is a potential rocket fuel which undergoes combustion according to the reaction:<br><br>Fro — Thermodynamics and Thermochemistry Chemistry Question

Question

Diborane is a potential rocket fuel which undergoes combustion according to the reaction:<br>$\text{B}_2\text{H}_6\text{(g)} + 3\text{O}_2\text{(g)} \to \text{B}_2\text{O}_3\text{(s)} + 3\text{H}_2\text{O(g)}$<br>From the following data, calculate the enthalpy change for the combustion of diborane.<br>$2\text{B(s)} + 3/2 \text{O}_2\text{(g)} \to \text{B}_2\text{O}_3\text{(s)}; \Delta H = -1273\text{ kJ/mol}$<br>$\text{H}_2\text{(g)} + 1/2 \text{O}_2\text{(g)} \to \text{H}_2\text{O(l)}; \Delta H = -286\text{ kJ/mol}$<br>$\text{H}_2\text{O(l)} \to \text{H}_2\text{O(g)}; \Delta H = 44\text{ kJ/mol}$<br>$2\text{B(s)} + 3\text{H}_2\text{(g)} \to \text{B}_2\text{H}_6\text{(g)}; \Delta H = 36\text{ kJ/mol}$