"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:

Risk of Obsolescence

The potential for a product or technology to become outdated or less valuable due to advancements in technology, changes in consumer preferences, or market developments.

Executory Costs

Costs associated with maintaining and operating leased property, such as insurance, maintenance, and taxes, often shared by lessee and lessor.

Lease Transaction

An agreement where a lessor allows a lessee to use an asset in exchange for payment over a predetermined period.

Capital Lease

A lease classified as an asset purchase for accounting purposes, where the lessee assumes some of the risks and benefits of ownership.