This reaction must have a ∆G<0 at SATP:   Xe(g)+F2(g)→XeF2(g)   2Na(s)+Cl2(g)→2NaCl(s)   2NaF(s)+I2(s)→2NaI(s)+F2(g)   MgSO4(s)→Mg(s)+S(s)+2O2(g)

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 106QRT
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This reaction must have a ∆G<0 at SATP:

  Xe(g)+F2(g)→XeF2(g)
  2Na(s)+Cl2(g)→2NaCl(s)
  2NaF(s)+I2(s)→2NaI(s)+F2(g)
  MgSO4(s)→Mg(s)+S(s)+2O2(g)
Expert Solution
Step 1

We have to consider entropy here.

We know,

G = H-TS

So a  reaction proceed with generating high amount of entropy, then that generally give G<0 as follows:

G = H-TS

 If S>> 0, then TS >>H

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