Using the Thermodynamic Data Provided Below, Calculate K_a2 for H₂CO₃(aq) $\circ$

question 121

Multiple Choice

Using the thermodynamic data provided below, calculate K_a2 for H₂CO₃(aq) at 25 ^$\circ$ . $\begin{array}{|l|c|c|}\hline & \Delta \mathrm{H}_{\mathrm{f}}^{\circ}(\mathrm{kJ} / \mathrm{mol}) & \mathrm{S}^{\circ}(\mathrm{J} / \mathrm{K} \cdot \mathrm{~mol}) \\\hline \mathrm{H}^{+}(a q) & 0 & 0 \\\hline \mathrm{H}_{2} \mathrm{CO}_{3}(a q) & -698.7 & 191 \\\hline \mathrm{HCO}_{3}^{-}(a q) & -691.11 & 95.0 \\\hline \mathrm{CO}_{3}^{2-}(a q) & -676.26 & -53.1 \\\hline\end{array}$

• A) 4.09 * 10^-11
• B) 4.39 * 10^-9
• C) 4.59 * 10^-10
• D) 4.59 * 10^-11
• E) None of the above

Understand the principles of purchasing-power parity and its application to exchange rates.

Grasp the effects of inflation on exchange rates and purchasing power in international markets.

Identify the importance of arbitrage in financial markets.

Understand the participation trends of married women in the workforce from 1970 to 2005.

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