Problem: Given the values of ΔH∘rxn, ΔS∘rxn, and T below, determine ΔSuniv.a) ΔH∘rxn = 87 kJ , ΔS∘rxn = 146 J/K , T= 296 K, will this be spontaneous or not spontaneous?b) ΔH∘rxn = 87 kJ , ΔS∘rxn = 146 J/K , T= 762 K, will this be spontaeous or not spontaneous?c) ΔH∘rxn = 87 kJ , ΔS∘rxn = −46 J/K , T= 296 K, will this be spontaneous or not spontaneous?d) ΔH∘rxn = −87 kJ , ΔS∘rxn = 146 J/K , T= 390 K, will this be spontaneous or not spontaneous?

FREE Expert Solution

ΔSuniv = (-)  non-spontaneous

ΔSuniv (+)  spontaneous


Suniv = Srxn + SsurrSsurr = HrxnTSuniv = Srxn + HrxnT


81% (374 ratings)
View Complete Written Solution
Problem Details

Given the values of ΔHrxn, ΔSrxn, and T below, determine ΔSuniv.

a) ΔHrxn = 87 kJ , ΔSrxn = 146 J/K , T= 296 K, will this be spontaneous or not spontaneous?

b) ΔHrxn = 87 kJ , ΔSrxn = 146 J/K , T= 762 K, will this be spontaeous or not spontaneous?

c) ΔHrxn = 87 kJ , ΔSrxn = −46 J/K , T= 296 K, will this be spontaneous or not spontaneous?

d) ΔHrxn = −87 kJ , ΔSrxn = 146 J/K , T= 390 K, will this be spontaneous or not spontaneous?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Entropy concept. You can view video lessons to learn Entropy. Or if you need more Entropy practice, you can also practice Entropy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Mehadi's class at Sacramento City College.