Calculate ?S° for the Dissociation of Dinitrogen Tetraoxide at 25°C

question 31

Multiple Choice

Calculate ?S° for the dissociation of dinitrogen tetraoxide at 25°C. N₂O₄(g) ? 2NO₂(g)
$\begin{array}{lll}\text { Substance } & \Delta G_{\mathrm{f}}^{\circ}(\mathrm{kJ} / \mathrm{mol}) & \Delta H_{\mathrm{f}}^{\circ}(\mathrm{kJ} / \mathrm{mol}) \\\hline \mathrm{NO}_{2}(g) & +51.3 & +33.2 \\\mathrm{~N}_{2} \mathrm{O}_{4}(g) & +97.9 & +9.2\end{array}$

• A) ?2.10 kJ/K
• B) ?0.550 kJ/K
• C) ?0.208 kJ/K
• D) +0.076 kJ/K
• E) +2.10 kJ/K

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Definitions:

Work in Process Inventory

The inventory account that tracks the costs of materials, labor, and overhead for products that are in the process of being manufactured but are not yet completed.

Weighted-Average Method

An inventory costing method that averages the cost of inventory items to determine the cost of goods sold and ending inventory.

Process Costing System

A process costing system is used in manufacturing environments where the products are indistinguishable from each other and allocates the production costs based on the processes involved.

Conversion Costs

The sum of direct labor and overhead costs, which are incurred to convert raw materials into finished products.