The normal melting point of sulfur is 113 ^$\circ$C. If a sample of solid sulfur is at 95 ^$\circ$C, predict the signs of $\Delta$H, $\Delta$S, and $\Delta$G for the melting process at this temperature. A) ($\Delta$H) 0, $\Delta$S 0, $\Delta$G 0, $\Delta$S 0, $\Delta$G 0 C) ($\Delta$H) 0, $\Delta$S

Question

The normal melting point of sulfur is 113 ^$\circ$C. If a sample of solid sulfur is at 95 ^$\circ$C, predict the signs of $\Delta$H, $\Delta$S, and $\Delta$G for the melting process at this temperature. A) ($\Delta$H) > 0, $\Delta$S > 0, $\Delta$G < 0 B) ($\Delta$H) > 0, $\Delta$S > 0, $\Delta$G > 0 C) ($\Delta$H) > 0, $\Delta$S < 0, $\Delta$G < 0 D) ($\Delta$H) < 0, $\Delta$S > 0, $\Delta$G > 0 E) ($\Delta$H) < 0, $\Delta$S < 0, $\Delta$G > 0

Quizplus · Accepted Answer

The melting process is endothermic, so $\Delta$H > 0. The entropy increases when a solid melts, so $\Delta$S > 0. At 95°C, which is below the melting point, the process is non-spontaneous, so $\Delta$G > 0.

The Normal Melting Point of Sulfur Is 113 ∘\circ∘ C If a Sample of Solid Sulfur Is at 95

The Normal Melting Point of Sulfur Is 113 ^$\circ$C If a Sample of Solid Sulfur Is at 95