Calculate the Standard Enthalpy Change for the Reaction 4A $\rarr$ 2AB + A₂
Given

Calculate the standard enthalpy change for the reaction 4A + 2B $\rarr$ 2AB + A₂
Given: $\begin{array}{ll}2 \mathrm{~A}+\mathrm{B} \rightarrow \mathrm{~A}_{2} \mathrm{~B} & \Delta \mathrm{H}^{\circ}=-25.0 \mathrm{~kJ} / \mathrm{mol} \\2 \mathrm{~A}_{2} \mathrm{~B} \rightarrow 2 \mathrm{AB}+\mathrm{A}_{2} & \Delta \mathrm{H}^{\circ}=35.0 \mathrm{~kJ} / \mathrm{mol}\end{array}$

A) - 95.0 kJ/mol
B) - 60.0 kJ/mol
C) - 15.0 kJ/mol
D) 10.0 kJ/mol
E) 45.0 kJ/mol

Correct Answer:

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