"A Diamond Is Forever" Is One of the Most Successful

question 3

Multiple Choice

"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: ΔH_f°(diamond) = 1.895 kJ/mol; S°(diamond) = 2.337 J mol⁻¹K⁻¹; S°(graphite) = 5.740 J mol⁻¹K⁻¹.

• A)Δ G° = 2.19 kJ; forever
• B)Δ G° = −1.90 kJ; not forever
• C)Δ G° = −2.90 kJ; not forever
• D)Δ G° = 1.90 kJ; forever
• E)Δ G° = < −1000 kJ; not forever

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Definitions:

Social Decision Schemes

Simple rules used to determine final group decisions.

Heuristics

Mental shortcuts or rules of thumb that simplify decision making by facilitating quick, efficient judgments.

Nominal Group Techniques

A structured method for group brainstorming that encourages contributions from everyone.

Synergy

A positive force that occurs in groups when group members are stimulated to produce new solutions to problems through the process of mutual influence and encouragement within the group.