Question

During a displacement reaction..heat energy is released??

Answer 1

here goes ur answer my dear friend.
The heat of displacement is the heatchange when one mole of a metal isdisplaced from its salt solution by a more electropositive metal. The thermochemical reaction for thedisplacement reaction of copper byzinc can be represented as follows.
hope it helps you dude

Answer 2

Yes,the heat is realesed.