the following stepwise reactions and associated ∆H° values Write the overall reaction. Determine the ∆H° for...

the following stepwise reactions and associated ∆H° values
Write the overall reaction.
Determine the ∆H° for the reaction you wrote.
The reaction is _________.
Calculate ∆H° for the reaction:
3XY + 3YZ → 3XZ + 6Y

Step 1: X2 + 2Y → 2XY	H° = -125.20 kJ
Step 2: XY + Z₂ → XZ + YZ	H° = 18.50 kJ
Step 3: 2XZ → X₂ + Z₂	H° = 80.52 kJ

Expert Solution

(Enthalpy change for each reaction is ∆H° not H°.)

The law used here to solve is Hess's law of constant heat summation. The overall reaction : 3XY + 3YZ → 3XZ + 6Y

When we reverse a reaction, the sign of ∆H° get changed.

∆H°rxn = 78.54 kJ

Endothermic reaction ( positive value of ∆H°rxn)

queen_honey_blossom answered 2 years ago

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