Using the Thermodynamic Data Provided Below, Calculate the Standard Change

question 28

Multiple Choice

Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium sulfate is dissolved in water. $\begin{array}{|l|c|}\hline & \mathrm{S}^{\circ}(\mathrm{J} / \mathrm{K} \cdot \mathrm{~mol}) \\\hline \mathrm{Na}_{2} \mathrm{SO}_{4}(s) & 149.49 \\\hline \mathrm{Na}^{+}(a q) & 60.25 \\\hline \mathrm{SO}_{4}{ }^{2-}(a q) & 17.15 \\\hline\end{array}$ Will the solubility of sodium nitrate increase or decrease if the temperature of the system is increased

• A) -11.84 J/K·mol; solubility decreases with increasing temperature
• B) -11.84 J/K·mol; solubility increases with increasing temperature
• C) 11.84 J/K·mol; solubility decreases with increasing temperature
• D) 11.84 J/K·mol; solubility increases with increasing temperature
• E) None of the above

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Definitions:

Price of Capital

The cost of using capital for production, typically represented by the interest rate or rate of return required by investors.

Total Expenditure

The aggregate amount of money spent by consumers or the government on goods and services over a specified period.

Price of Labor

The compensation received by employees in exchange for their work, often discussed in terms of wages or salaries.

Isoquants

Curves that represent combinations of different inputs that produce the same output level, used in production theory.