The value of ΔH° for the reaction below is -72 kJ. ________ kJ of heat are released when 5.5 mol of HBr is formed in this reaction. H₂ (g)+ Br₂ (g)→ 2HBr (g) A)144 B)72 C)0.44 D)198 E)-72

Question

Quizplus · Accepted Answer

The reaction as given shows the formation of 2 moles of HBr releases -72 kJ of heat. Therefore, for 5.5 moles of HBr, the heat released would be $(-72 \, \text{kJ} \times \frac{5.5}{2}) = -198 \, \text{kJ}$.

The Value of ΔH° for the Reaction Below Is -72