Determine the standard enthalpy of reaction, AH°rxn, of the reaction below, given thefollowing information.Mg(s) + 2 H,O(1) Mg(OH),(s) + H,(s)SubstanceAH°I (kJ/mol)H20()-285.8Mg(OH)2 (s)-924.7638.9 kYou Answered+638.9 kJ4953 1JCorrect Answer-353.1 kJ

Mg(s) + 2H2O(l) ---> Mg(OH)2(s) + H2(g)

Answered: Determine the standard enthalpy of…

Determine the standard enthalpy of reaction, AH°n, of the reaction below, given the following information. Mg(s) + 2 H,0() Mg(OH),() + H,() Substance AH° (kJ/mol) H2O () -285.8 Mg(OH)2 (s) -924.7

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 77E: Give the definition of the standard enthalpy of formation for a substance. Write separate reactions...

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Question

Determine the standard enthalpy of reaction, AH°rxn, of the reaction below, given the
following information.
Mg(s) + 2 H,O(1) Mg(OH),(s) + H,(s)
Substance
AH°I (kJ/mol)
H20()
-285.8
Mg(OH)2 (s)
-924.7
638.9 k
You Answered
+638.9 kJ
4953 1J
Correct Answer
-353.1 kJ

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