Question

total bond energy quick check hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown. 2hbr→h₂ + br₂ the energy of the reactant is 732 kj/mol, and the energy of the products is 630 kj/mol. what is the total energy of the reaction? is this reaction endothermic or exothermic? (1 point) -102 kj/mol, endothermic 102 kj/mol, exothermic -102 kj/mol, exothermic 102 kj/mol, endothermic

Explanation:

Step1: Calculate reaction energy

Reaction energy = Energy of products - Energy of reactants. So, $630 - 732=- 102$ kJ/mol.

Step2: Determine reaction type

If reaction energy is negative, heat is released and it is an exothermic reaction. Since the value is - 102 kJ/mol, it is exothermic.

Answer:

• 102 kJ/mol, exothermic