Question

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?

Answer 1

The energy of the reaction is 9 kJ/mol and the reaction is endothermic.

What is the total energy of the reaction?

We know that in a reaction, there could be loss or gain of energy. If there is a loss of energy in a reaction, it means that the reaction is exothermic and heat is given out. If heat is gained in the reaction, it means that the reaction is endothermic and heat is absorbed.

Given that;

Energy of the products =  590 kJ/mol

Energy of the reactants = 581 kJ/mol

Using;

Energy of products - Energy of reactants

= 590 kJ/mol - 581 kJ/mol

= 9 kJ/mol

Learn more about energy of reaction:brainly.com/question/2223923

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