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Consider these reactions: Reaction 1: H2 (9) + Cl2 (g) → 2HC1(9) AH=-184.6 kJ %3D Reaction 2: 20F2 (g) → 02(g) + 2 F2 (g) AH= -49.4 kJ Reaction 3: N2 (g) + 202 (g) → 2NO2 (g) AH=+66.4 kJ Which reaction is endothermic? O Reaction 3 Reaction 2 Reaction 1

Consider these reactions: Reaction 1: H2 (9) + Cl2 (g) → 2HC1(9) AH=-184.6 kJ %3D Reaction 2: 20F2 (g) → 02(g) + 2 F2 (g) AH= -49.4 kJ Reaction 3: N2 (g) + 202 (g) → 2NO2 (g) AH=+66.4 kJ Which reaction is endothermic? O Reaction 3 Reaction 2 Reaction 1

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 5.31QE
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Consider these reactions: Reaction 1: H2 (9) + Cl2 (g) → 2HC1(g) AH = -184.6 kJ Reaction 2: 20F2 (g) → 02(9) + 2 F2 (g) AH = –49.4 kJ Reaction 3: N2 (g) + 202(g) → 2NO2(g) AH=+66.4 kJ Which reaction is endothermic? Reaction 3 O Reaction 2 O Reaction 1
Transcribed Image Text:Consider these reactions: Reaction 1: H2 (9) + Cl2 (g) → 2HC1(g) AH = -184.6 kJ Reaction 2: 20F2 (g) → 02(9) + 2 F2 (g) AH = –49.4 kJ Reaction 3: N2 (g) + 202(g) → 2NO2(g) AH=+66.4 kJ Which reaction is endothermic? Reaction 3 O Reaction 2 O Reaction 1
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