What is So for A in the reaction 3 A→ 2 B if AS° (rxn) =-106.8 J/mol · K? [S° (B) =(240.0 J/mol K)]•J/mol • K123☑456C78 9+/-0×10

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Answered: What is So for A in the reaction 3 A→ 2…

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy

Section18.5: Entropy Changes And Spontaneity

Problem 1RC

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9.96 Most first aid "cold packs" are based on the endothermic dissolution of ammonium nitrate in water: NH4NO3(s)NH4+(aq)+NO3(aq) H= 25.69 kJ A particular cold pack contains 50.0 g of NH4NO3 and 125.0 g of water. When the pack is squeezed, the NH4NO3dissolves in the water. If the pack and its contents are initially at 24.0°C, what is the lowest temperature that this bag could reach? (Assume that the ammonium nitrate solution has a specific heat of 4.25J g-l K-l, and that the heat capacity of the bag itself is small enough to be neglected.)
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What is So for A in the reaction 3 A→ 2 B if AS° (rxn) =-106.8 J/mol · K? [S° (B) = (240.0 J/mol K)] • J/mol • K 1 2 3 ☑ 4 5 6 C 7 8 9 +/- 0 ×10