# Problem: Use standard entropies to calculate ΔS˚rxn for the balanced chemical equation: 2 PCl3(l) + O2(g) →  2 POCl3(l)SubstanceΔS˚ (J/mol•K)POCl3(l)222.5POCl3(g)325.5PCl3(l)217.1PCl3(g)311.8O2(g)205.2

###### FREE Expert Solution

$\overline{){\mathbf{∆}}{\mathbf{S}}{{\mathbf{°}}}_{{\mathbf{rxn}}}{\mathbf{=}}{\mathbf{S}}{{\mathbf{°}}}_{{\mathbf{product}}}{\mathbf{-}}{\mathbf{S}}{{\mathbf{°}}}_{{\mathbf{reactants}}}}$

99% (178 ratings) ###### Problem Details

Use standard entropies to calculate ΔS˚rxn for the balanced chemical equation: 2 PCl3(l) + O2(g) →  2 POCl3(l)

 Substance ΔS˚ (J/mol•K) POCl3(l) 222.5 POCl3(g) 325.5 PCl3(l) 217.1 PCl3(g) 311.8 O2(g) 205.2

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.

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Based on our data, we think this problem is relevant for Professor Dockery's class at KSU.