Calculate ?G° for the Reaction Below at 25 A) -61191 KJ
B) -632

question 39

Multiple Choice

Calculate ?G° for the reaction below at 25.0°C.
P₄O₁₀(s) + 6H₂O(l) ? 4H₃PO₄(l)
$\begin{array}{lll}\text { Species } & \Delta H_{\mathrm{f}}^{\circ}(\mathrm{kJ} / \mathrm{mol}) & S^{\circ}(\mathrm{J} / \mathrm{mol} \cdot \mathrm{K}) \\\hline \mathrm{P}_{4} \mathrm{O}_{10}(s) & -2984.0 & 228.9 \\\mathrm{H}_{2} \mathrm{O}(l) & -285.8 & 69.95 \\\mathrm{H}_{3} \mathrm{PO}_{4}(l) & -1279.0 & 110.5\end{array}$

• A) -6119.1 kJ
• B) -632.8 kJ
• C) -355.6 kJ
• D) +210.6 kJ
• E) +6119.1 kJ

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Definitions:

Net Operating Income

A measure of a company's profitability, calculated by subtracting operating expenses from operating revenue.

Variable Costing

An accounting method that only allocates variable costs to inventory, treating fixed costs as period expenses that are charged to the income statement in the period they are incurred.

Absorption Costing

A method of inventory costing that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed manufacturing overheads - in the cost of a unit of product.

Contribution Format

A financial statement layout that separates fixed costs from variable costs to highlight the contribution margin of a business.