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Using the enthalpies of reaction computed in the data and the value give for the enthalpy of formation of liquid water, show the Hess law determination of the enthalpy of formation of solid magnesium oxide

Using the enthalpies of reaction computed in the data and the value give for the enthalpy of formation of liquid water, show the Hess law determination of the enthalpy of formation of solid magnesium oxide

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Using the enthalpies of reaction computed in the data and the value give for the enthalpy of formation of liquid water, show the Hess law determination of the enthalpy of formation of solid magnesium oxide
Use the following to determine the enthalpy of formation of magnesium oxide: Mg (s) + 2HCI (aq) → MgCl2 (aq)+ H2 (g) AH= (calculated in the experiment) Mg0 (s) + 2HC (aq) → MgCl2 (aq)+ H20 (1) AH= (calculated in the experiment) AH=- 285.8 kJ/mol (from Appendix 3) H2 (g) + ½ 02 (g)→ H20 (1) AH = (determine using Hess's Law) Mg (s) + ½ 02 (g) → Mg0 (s) MAY tv 19
Transcribed Image Text:Use the following to determine the enthalpy of formation of magnesium oxide: Mg (s) + 2HCI (aq) → MgCl2 (aq)+ H2 (g) AH= (calculated in the experiment) Mg0 (s) + 2HC (aq) → MgCl2 (aq)+ H20 (1) AH= (calculated in the experiment) AH=- 285.8 kJ/mol (from Appendix 3) H2 (g) + ½ 02 (g)→ H20 (1) AH = (determine using Hess's Law) Mg (s) + ½ 02 (g) → Mg0 (s) MAY tv 19
Reactant Mg Mg MgO MgO Trial Number 1 3 एडाउफ००० 4 0ス533 02540 Mass of reactant 0.505 6 Data from graph 34.0c 33.1 Initial Temp (to) 23.7°c 31.8 63.0 sec 35-5 Initial Time (To) 36.5 Sec 36.5 sec 34.0 Sc 0.005547 Linear Curve fit slope (m) -0.006o22-0o.o10 18 Linear Curve fit intercept (b) 3. 44.959-38.01 37.05 otes: Room temp 23.7°C
Transcribed Image Text:Reactant Mg Mg MgO MgO Trial Number 1 3 एडाउफ००० 4 0ス533 02540 Mass of reactant 0.505 6 Data from graph 34.0c 33.1 Initial Temp (to) 23.7°c 31.8 63.0 sec 35-5 Initial Time (To) 36.5 Sec 36.5 sec 34.0 Sc 0.005547 Linear Curve fit slope (m) -0.006o22-0o.o10 18 Linear Curve fit intercept (b) 3. 44.959-38.01 37.05 otes: Room temp 23.7°C
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