At what temperature does the Fe(s) $\leftrightarrow$ Fe(g) phase transition occur?
$\Delta$ H= 415.5 kJ/mol; $\Delta$ S = 153.4 J/mol · K.

Question

At what temperature does the Fe(s) $\leftrightarrow$Fe(g) phase transition occur? $\Delta$H= 415.5 kJ/mol; $\Delta$S = 153.4 J/mol · K.

Quizplus · Accepted Answer

The correct answer is D.The phase transition temperature can be calculated using the equation:$$\Delta G = \Delta H - T\Delta S$$At the phase transition temperature, $\Delta G = 0$. Therefore, we can solve for T:$$T = \frac{\Delta H}{\Delta S} = \frac{415.5 kJ/mol}{153.4 J/mol · K} = 2709 K$$Converting to Fahrenheit:$$T = 2709 K \times \frac{9}{5} - 459.67 = 4416°F$$

At What Temperature Does the Fe(s) ↔\leftrightarrow↔ Fe(g) Phase Transition Occur Δ\DeltaΔ

At What Temperature Does the Fe(s) $\leftrightarrow$ Fe(g) Phase Transition Occur $\Delta$