The balanced equation below represents a molecule of bromine separating into two bromine atoms.
br2 → br + br
what occurs during this change?
energy is absorbed and a bond is formed.
energy is absorbed and a bond is broken.
energy is released and a bond is formed.
energy is released and a bond is broken

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

dynamic equilibrium is the answer.