**Section 4.3** **P4.12** Use the following data at 298.15 K to complete this problem: | Reaction | $\Delta_r H^\circ $ (kJ mol$^{-1}$) | |-----------------------------------|--------------------------------------| | $ \frac{1}{2} \text{H}_2(g) + \frac{1}{2} \text{O}_2(g) \rightarrow \text{OH}(g) $ | 38.95 | | $ \text{H}_2(g) + \frac{1}{2} \text{O}_2(g) \rightarrow \text{H}_2\text{O}(g) $ | -241.814 | | $ \text{H}_2(g) \rightarrow 2\text{H}(g) $ | 435.994 | | $ \text{O}_2(g) \rightarrow 2\text{O}(g) $ | 498.34 | Assuming ideal gas behavior, calculate $ \Delta_r H^\circ $ and $ \Delta_r U^\circ $ for the following three reactions. a. $ \text{OH}(g) \rightarrow \text{H}(g) + \text{O}(g) $ b. $ \text{H}_2\text{O}(g) \rightarrow 2\text{H}(g) + \text{O}(g) $ c. $ \text{H}_2\text{O}(g) \rightarrow \text{H}(g) + \text{OH}(g) $

Section 4.3 P4.12 Use the following data at 298.15 K to complete this problem: | Reaction | $\Delta_r H^\circ $ (kJ mol$^{-1}$) | |-----------------------------------|--------------------------------------| | $ \frac{1}{2} \text{H}_2(g) + \frac{1}{2} \text{O}_2(g) \rightarrow \text{OH}(g) $ | 38.95 | | $ \text{H}_2(g) + \frac{1}{2} \text{O}_2(g) \rightarrow \text{H}_2\text{O}(g) $ | -241.814 | | $ \text{H}_2(g) \rightarrow 2\text{H}(g) $ | 435.994 | | $ \text{O}_2(g) \rightarrow 2\text{O}(g) $ | 498.34 | Assuming ideal gas behavior, calculate $ \Delta_r H^\circ $ and $ \Delta_r U^\circ $ for the following three reactions. a. $ \text{OH}(g) \rightarrow \text{H}(g) + \text{O}(g) $ b. $ \text{H}_2\text{O}(g) \rightarrow 2\text{H}(g) + \text{O}(g) $ c. $ \text{H}_2\text{O}(g) \rightarrow \text{H}(g) + \text{OH}(g) $

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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