When H2(g) reacts with C2H4(g) to form C2H6(g) according to the following equation, energy is released into the surroundings.
H2(g) + C2H4(g) → C2H6(g)
Is this reaction endothermic or exothermic?
What is the sign of ΔH for the reaction?
Would the energy of the surroundings increase or decrease as a result of this process?