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# Problem: Given the values of ΔH°rxn, ΔS°rxn, and T below, determine ΔSuniv.Part 1 ΔH°rxn = 84 kJ , ΔS°rxn,= 144 J/K , T= 303 KExpress your answer using two significant figures.Part 2ΔH°rxn = 84 kJ , ΔS°rxn= 144 J/K , T= 762 KExpress your answer using one significant figure.Part 3ΔH°rxn= 84 kJ , ΔS°rxn=− 144 J/K , T= 303 KExpress your answer using two significant figures.Part 4ΔH°rxn=− 84 kJ , ΔS°rxn= 144 J/K , T= 406 KExpress your answer using two significant figures.

###### FREE Expert Solution

We're being asked to calculate ΔSuniv given the values of ΔH°rxn, ΔS°rxn, and T.

To calculate the total entropy or entropy of the universe, we use the following equation:

$\overline{){\mathbf{∆}}{{\mathbf{S}}}_{{\mathbf{univ}}}{\mathbf{=}}{\mathbf{∆}}{{\mathbf{S}}}_{{\mathbf{sys}}}{\mathbf{+}}{\mathbf{∆}}{{\mathbf{S}}}_{{\mathbf{surr}}}}$

ΔSsys = ΔSrxn

The entropy of the surroundings is given by:

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###### Problem Details

Given the values of ΔH°rxn, ΔS°rxn, and T below, determine ΔSuniv.

Part 1

ΔH°rxn = 84 kJ , ΔS°rxn,= 144 J/K , T= 303 K

Part 2

ΔH°rxn = 84 kJ , ΔS°rxn= 144 J/K , T= 762 K

Part 3

ΔH°rxn= 84 kJ , ΔS°rxn=− 144 J/K , T= 303 K