4. Hess's LawCalculate AH for the reaction: 2 C(s) + H2(g) → C:H2(g), given the following chemicalequations and their respective enthalpy changes:C2H2(g)+02(g)→2CO2(g)+H20(1)AH, = -1299.6 kJ(1)%3DC(s)+02(g)→CO2(g)AH, = -393.5 kJ(2)H2(g)+502(g)→H20(1) AH3 = -285.8 kJ(3)

The enthalpy change(∆H) of a reaction changes by the following operations ∆H changes its sign when…

Answered: Hess's Law Calculate AH for the…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section4.10: Standard Formation Enthalpies

Problem 4.18CE

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Hess's Law Calculate AH for the reaction: 2 C(s) + H2(g) → C2H2(g), given the following chemical equations and their respective enthalpy changes: C,H2(g)+02(g)→2CO2(g)+H20(1) AH, = -1299.6 kJ (1) C()+0,(3)¬CO;(g) AH2 = -393.5 kJ H2(g)+;02(g)→H20(!) (2) AH3 = -285.8 kJ (3)