2Mg + O, → 2Mgo Mg + 2HCI → M9CI, + H, MgO + 2HCI → MgCl, + H¸O H, + ½ O, → H,0 AH = -21.0 kJ AH = -33.5 kJ AH = -76.0 kJ

Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section5.5: Enthalpy Changes For Chemical Reactions
Problem 1RC: 1. For the reaction 2 Hg(l) + O2(g) → 2 HgO(s), ∆rH° = 181.6 kJ/mol-rxn. What is the enthalpy change...
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Unit Name: Thermodynamic Chemistry 

investigate and analyse energy changes and rates of reaction in physical and chemical processes, and solve related problems;

Calculate the enthalpy of the following reaction:

 

 

2Mg + O, → 2M9O
Given:
Mg + 2HCI → M9CI, + H,
Mgo + 2HCI → MgCl, + H¸O
AH = -21.0 kJ
AH = -33.5 kJ
H, + ½ O, → H,0
AH = -76.0 kJ
Transcribed Image Text:2Mg + O, → 2M9O Given: Mg + 2HCI → M9CI, + H, Mgo + 2HCI → MgCl, + H¸O AH = -21.0 kJ AH = -33.5 kJ H, + ½ O, → H,0 AH = -76.0 kJ
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