When producing hydrogen iodide, the energy of the reactants is 581 kJ/mol, and the energy of the products is 590 kJ/mol. The equation is shown.
H2 + I2 → 2HI
What is the total energy of the reaction? Is this an endothermic or exothermic reaction?
(1 point)
9 kJ/mol, exothermic
9 kJ/mol, exothermic
9 kJ/mol, endothermic
9 kJ/mol, endothermic
–9 kJ/mol, endothermic
–9 kJ/mol, endothermic
–9 kJ/mol, exothermic
To find the total energy of the reaction, you can calculate the energy change by subtracting the energy of the reactants from the energy of the products:
Total energy of reaction = Energy of products - Energy of reactants
Total energy of reaction = 590 kJ/mol - 581 kJ/mol
Total energy of reaction = 9 kJ/mol
Since the total energy change is positive (9 kJ/mol), the reaction is endothermic. Therefore, the correct answer is:
9 kJ/mol, endothermic