PROBLEM: A key step in the production of sulfuric acid is the oxidation of SO₂(g) to SO3(g): 2SO₂(g) + O₂(g) → 2SO3(g) At 298 K, AG = -141.6 kJ; AH = -198.4 kJ; and AS = -187.9 J/K (a) Use the data to decide if this reaction is spontaneous at 25°C, and predict how AG will change with increasing T. (b) Assuming AH and AS are constant with increasing T, is the reaction spontaneous at 900.° C?

PROBLEM: A key step in the production of sulfuric acid is the oxidation of SO₂(g) to SO3(g): 2SO₂(g) + O₂(g) → 2SO3(g) At 298 K, AG = -141.6 kJ; AH = -198.4 kJ; and AS = -187.9 J/K (a) Use the data to decide if this reaction is spontaneous at 25°C, and predict how AG will change with increasing T. (b) Assuming AH and AS are constant with increasing T, is the reaction spontaneous at 900.° C?

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter15: Energy And Chemical Change

Section: Chapter Questions

Problem 102A

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