NO Gas Is Converted to NO₂ Gas According to the Following

question 31

Multiple Choice

NO gas is converted to NO₂ gas according to the following reaction:
NO(g) + $$\frac { 1 } { 2 }$$ O₂(g) $\rightarrow$ NO₂(g)
What is the standard entropy change when 0.5 mol of NO gas reacts with 0.5 mol of O₂ gas? $$\begin{array} { l c } \text { Substance } & \boldsymbol { S } ^ { \circ } ( \mathbf { J } / \mathbf { m o l } \cdot \mathbf { K } ) \\\mathrm { NO } ( g ) & 210.7 \\\mathrm { O } _ { 2 } ( g ) & 205.0 \\\mathrm { NO } _ { 2 } ( g ) & 240.0\end{array}$$

• A) -36.6 J/K
• B) -175.7 J/K
• C) -83.4 J/K
• D) +83.4 J/K
• E) +36.6 J/K

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Definitions:

Capital Structure

The combination of a company's long-term debt, specific short-term debt, common equity, and preferred equity, constituting how a firm finances its overall operations and growth.

Coupon Rate

The interest rate stated on a bond when issued, which represents the annual interest payment as a percentage of the bond's face value.

Unlevered Cost of Capital

The cost of capital for a company without debt, reflecting the risk of its equity alone.

Cost of Debt

The effective rate that a company pays on its current debt, inclusive of all fees and interest.