Which of the reaction will generate the greatest amount of energy on a total mass basis of reactants — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Energy per gram of total reactant mixture:<br>For $H_2$-$O_2$: 483.636 / (4 + 32) = 13.43 kJ/g.<br>For $H_2$-$O_3$: 868.2 / (6 + 48) = 16.08 kJ/g.<br>For $H_2$-$H_2O_2$: 347.33 / (2 + 34) = 9.65 kJ/g.<br>Thus, $H_2$-$O_3$ is the most efficient on total reactant mass basis.