Exothermic and Endothermic reactions

Exothermic reactions

Exothermic reactions are those reactions which liberate energy

E.g.

C₆ H₁₂O₆ -> CO₂ + H₂O + Energy

2K + 2H₂O -> 2KOH + H₂ + Energy

2Na + 2H₂O -> 2NaOH + H₂ + Energy