Consider the following numbered processes:
1) A → 2B
2) B → C + D
3) E → 2D
ΔH for the process A → 2C + E is

Question

Quizplus · Accepted Answer

To find the ΔH for the process A → 2C + E, we need to combine the given processes in a way that leads to the desired products and reactants. Process 1 converts A to 2B. Each B then converts to C + D through process 2, so we need to double the ΔH of process 2 to account for both Bs. Process 3 is reversed to convert 2D back to E, so we subtract the ΔH of process 3. Therefore, the correct combination is ΔH of process 1 + 2 times ΔH of process 2 - ΔH of process 3.

Consider the Following Numbered Processes