Predict the Normal Boiling Point of Triethylborane (C₆H₁₅B) Using the Following

question 79

Multiple Choice

Predict the normal boiling point of triethylborane (C₆H₁₅B) using the following data: $\begin{array}{lcc}&\Delta \mathrm{H}^{\circ}{ }_{\mathrm{f}}\left(25^{\circ} \mathrm{C}\right) & \Delta \mathrm{G}^{\circ}_\mathrm{f}\left(25^{\circ} \mathrm{C}\right) \\\hline\mathrm{C}_{6} \mathrm{H}_{15} \mathrm{~B}(\mathrm{l}) & -194.6 \mathrm{~kJ} / \mathrm{mol} & 9.4 \mathrm{~kJ} / \mathrm{mol} \\\mathrm{C}_{6} \mathrm{H}_{15} \mathrm{~B}(\mathrm{g}) & -157.7 \mathrm{~kJ} / \mathrm{mol} & 16.1 \mathrm{~kJ} / \mathrm{mol}\end{array}$

• A) 92^\(\circ\)C
• B) -21^\(\circ\)C
• C) 21^\(\circ\)C
• D) 365^\(\circ\)C
• E) 256^\(\circ\)C

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