A diamond is forever” is one of the most successful advertising slogans of all time. But is it true? For the reaction shown below, calculate the standard free energy change at 298K and determine whether or not a diamond is “forever”.
A diamond is forever” is one of the most successful advertising slogans of all time. But is it true? For the reaction shown below, calculate the standard free energy change at 298K and determine whether or not a diamond is “forever”.
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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7. “A diamond is forever” is one of the most successful advertising slogans of all time. But is it
true? For the reaction shown below, calculate the standard free energy change at 298K and
determine whether or not a diamond is “forever”.
C(diamond) → C(graphite)
Data: ΔHf°(diamond) = 1.895 kJ/mol; S°(diamond) = 2.337 J mol−1K−1; S°(graphite) = 5.740 J
mol−1K−1.
A) ΔG° = 2.19 kJ; forever
B) ΔG° = −1.90 kJ; not forever
C) ΔG° = −2.90 kJ; not forever
D) ΔG° = 1.90 kJ; forever
E) ΔG° = < −1000 kJ; not forever
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