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H2 (g) + '/½ O2 (g) → H2O (1) 2 Na (s) + '/½ O2 (g) → Na2O (s) Na (s) + '/½ O2 (g) + '½ H2 (g) → NaOH (s) AH° =-286 kJ AH° =-414 kJ AH° = -425 kJ Based on the information above, what is the standard enthalpy change for the following reaction?

H2 (g) + '/½ O2 (g) → H2O (1) 2 Na (s) + '/½ O2 (g) → Na2O (s) Na (s) + '/½ O2 (g) + '½ H2 (g) → NaOH (s) AH° =-286 kJ AH° =-414 kJ AH° = -425 kJ Based on the information above, what is the standard enthalpy change for the following reaction?

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 5.103QE
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How do I solve this question using Hess Law or other methods maybe?

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5. H2 (g) + '½ O2 (g)→ H2O (1) 2 Na (s) + '/½ O2 (g) → Na2O (s) Na (s) + '/½ O2 (g) + '/½ H2 (g) → NaOH (s) AH° = -286 kJ AH° = -414 kJ AH° = -425 kJ Based on the information above, what is the standard enthalpy change for the following reaction? Na20 (s) + H2O (1) → 2 NaOH (s) A. +275 kJ B. -150 kJ C. -722 kJ D. -978 kJ
Transcribed Image Text:5. H2 (g) + '½ O2 (g)→ H2O (1) 2 Na (s) + '/½ O2 (g) → Na2O (s) Na (s) + '/½ O2 (g) + '/½ H2 (g) → NaOH (s) AH° = -286 kJ AH° = -414 kJ AH° = -425 kJ Based on the information above, what is the standard enthalpy change for the following reaction? Na20 (s) + H2O (1) → 2 NaOH (s) A. +275 kJ B. -150 kJ C. -722 kJ D. -978 kJ
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