Problem: Given the values of ΔH∘rxn, ΔS∘rxn, and T below, determine ΔSuniv.a. ΔH∘rxn = 84 kJ , ΔS∘rxn = 144 J/K , T = 303 Kb. ΔH∘rxn = 84 kJ , ΔS∘rxn = 144 J/K , T = 762 Kc. ΔH∘rxn = 84 kJ , ΔS∘rxn = −144 J/K , T = 303 Kd. ΔH∘rxn = − 84 kJ , ΔS∘rxn = 144 J/K , T = 406 K

🤓 Based on our data, we think this question is relevant for Professor Duis' class at NAU.

FREE Expert Solution

Follows these steps:

Step 1: Determine ΔS_surr.

Step 2: Determine ΔS_univ.

a. ΔH^∘_rxn  = 84 kJ , ΔS^∘_rxn = 144 J/K , T = 303 K

• Step 1

$$\begin{gathered} \boxed{\mathbf{∆}\mathbf{S}{\mathbf{°}}_{\mathbf{surr}}\mathbf{=}\mathbf{-}\frac{\mathbf{∆}\mathbf{H}{\mathbf{°}}_{\mathbf{rxn}}}{\mathbf{T}}} \\ \mathbf{∆}\mathbf{S}{\mathbf{°}}_{\mathbf{surr}}\mathbf{=}\mathbf{-}\frac{\mathbf{84}\mathbf{ }\mathbf{kJ}}{\mathbf{303}\mathbf{ }\mathbf{K}} \end{gathered}$$

ΔS_surr = -0.277 kJ/K