given-the-reactions-1-a-b-c-h-100-kj-2-c-d-h-50-kj-3-d-e-h-30-kj-what-is-the-ove

Question

Given the reactions: 1) A + B → C, ΔH = 100 kJ; 2) C → D, ΔH = -50 kJ; 3) D → E, ΔH = 30 kJ. What is the overall enthalpy change for A + B → E?

Accepted Answer

80 kJ

Answer

180 kJ

Answer

-20 kJ

Answer

-80 kJ