39. Consider the following numbered processes:ΔH for the process A → 2C + E is
1. A→2B
2. B →C + D
3. E → 2D
(A) ΔH1+ΔH2 +ΔH3
(B) ΔH1+ΔH2
(C) ΔH1+ΔH2 –ΔH3
(D) ΔH1 + 2ΔH2 –ΔH3
(E) none of these

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