Chem. 212(01/02/03) - Enthalpy of Formation of MgO

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Presentation transcript:

Chem. 212(01/02/03) - Enthalpy of Formation of MgO Hand in to TA: MgO-Pre-lab. Solution Calorimetry Application of Hess’s Law Mg(s) + 2 H+(aq)  Mg2+(aq) + H2(g) ΔH1 Mg2+(aq) + H2O(l)  MgO(s) + 2 H+(aq) ΔH2 ½ O2(g) + H2(g)  H2O(l) ΔH3 Sum of above gives => Mg(s) + ½ O2(g)  MgO(s) ΔH°f(MgO) = ΔH1 + ΔH2 + ΔH3

Calculations - Enthalpy of Formation of MgO Solution Calorimetry Calculations same as Pre-lab and lecture demo Application of Hess’s Law to get ΔHof(MgO) Compare to Literature Value: Report Due next week