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Magnesium and lead have similar first and second ionization energies, yet their reactivity with acid: M (s) + 2H* (aq) → M²* (aq) + H2 (g) AHrxn (where M = Mg or Pb) is very different. (a) Split the chemical equation into oxidative and reductive half-reactions. (b) Sketch a suitable thermodynamic cycle (similar to the Born-Haber cycle) that will allow you to calculate AHrxn for M Mg or Pb, based on the data available in your text book's tables (suggestion: keep the oxidative and reductive parts of the cycle separate). (c) Calculate AHrxn for M = Mg and Pb using your thermodynamic cycle and appropriate data from the text book's tables. (d) What thermodynamic parameter appears to cause the difference in AHrxn for the two metals? (e) What physical difference between Pb and Mg would cause the difference in the thermodynamic parameter of part (d)?

Magnesium and lead have similar first and second ionization energies, yet their reactivity with acid: M (s) + 2H* (aq) → M²* (aq) + H2 (g) AHrxn (where M = Mg or Pb) is very different. (a) Split the chemical equation into oxidative and reductive half-reactions. (b) Sketch a suitable thermodynamic cycle (similar to the Born-Haber cycle) that will allow you to calculate AHrxn for M Mg or Pb, based on the data available in your text book's tables (suggestion: keep the oxidative and reductive parts of the cycle separate). (c) Calculate AHrxn for M = Mg and Pb using your thermodynamic cycle and appropriate data from the text book's tables. (d) What thermodynamic parameter appears to cause the difference in AHrxn for the two metals? (e) What physical difference between Pb and Mg would cause the difference in the thermodynamic parameter of part (d)?

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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please answer first 3 parts (a) , (b) and (c) only
Magnesium and lead have similar first and second ionization energies, yet their reactivity with acid: M (s) + 2H* (aq)→ M²* (aq) + H2 (g) AHrxn (where M = Mg or Pb) is very different. (a) Split the chemical equation into oxidative and reductive half-reactions. (b) Sketch a suitable thermodynamic cycle (similar to the Born-Haber cycle) that will allow you to calculate AHrxn for M Mg or Pb, based on the data available in your text book's tables (suggestion: keep the oxidative and reductive parts of the cycle separate). (c) Calculate AHrxn for M = Mg and Pb using your thermodynamic cycle and appropriate data from the text book's tables. (d) What thermodynamic parameter appears to cause the difference in AHrxn for the two metals? (e) What physical difference between Pb and Mg would cause the difference in the thermodynamic parameter of part (d)?
Transcribed Image Text:Magnesium and lead have similar first and second ionization energies, yet their reactivity with acid: M (s) + 2H* (aq)→ M²* (aq) + H2 (g) AHrxn (where M = Mg or Pb) is very different. (a) Split the chemical equation into oxidative and reductive half-reactions. (b) Sketch a suitable thermodynamic cycle (similar to the Born-Haber cycle) that will allow you to calculate AHrxn for M Mg or Pb, based on the data available in your text book's tables (suggestion: keep the oxidative and reductive parts of the cycle separate). (c) Calculate AHrxn for M = Mg and Pb using your thermodynamic cycle and appropriate data from the text book's tables. (d) What thermodynamic parameter appears to cause the difference in AHrxn for the two metals? (e) What physical difference between Pb and Mg would cause the difference in the thermodynamic parameter of part (d)?
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