"A Diamond Is Forever" Is One of the Most Successful $\degree$

question 24

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 298 K and determine whether or not a diamond is "forever." C(diamond) $\degree$ C(graphite)
Data: $\Delta$ H_f $\degree$ (diamond) = 1.895 kJ/mol; S $\degree$ (diamond) = 2.337 J mol¯¹ K¯¹; S $\degree$ (graphite) = 5.740 J mol¯¹K¯¹.

• A) (\(\Delta\)G\(\degree\) = 2.19 kJ; forever
• B) (\(\Delta\)G\(\degree\)= -1.90 kJ; not forever)
• C) (\(\Delta\)G\(\degree\) = -2.90 kJ; not forever)
• D)( \(\Delta\)G\(\degree\) = 1.90 kJ; forever)
• E) (\(\Delta\)G\(\degree\) = < -1000 kJ; not forever)

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Definitions:

External Reporting

The provision of financial and non-financial information to external stakeholders, such as investors, creditors, and regulatory agencies, usually formal and standardized.

Fixed Manufacturing Costs

Expenses that do not change with the level of production, including things like rent for factory space and salaries of permanent staff.

Absorption Costing

An accounting method that includes all manufacturing costs (direct materials, direct labor, and both variable and fixed manufacturing overhead) in the cost of a product.

Product Costs

All costs that are involved in acquiring or making a product. In the case of manufactured goods, these costs consist of direct materials, direct labor, and manufacturing overhead. Also see Inventoriable costs.