The sublimation of solid carbon dioxide is a spontaneous process.Predict the sign (+,-,or 0)of $\Delta$G_r $\circ$ ,$\Delta$H_r $\circ$ ,and $\Delta$S_r $\circ$ ,respectively. A)(-,0,+) B)(-,-,-) C)(-,+,+) D)0,+,+ E)(-,+,-)

Question

Quizplus · Accepted Answer

The sublimation of solid carbon dioxide is spontaneous, so $\Delta G^\circ$ is negative. The process requires heat input (endothermic), so $\Delta H^\circ$ is positive. The entropy increases as solid turns to gas, so $\Delta S^\circ$ is positive.

The Sublimation of Solid Carbon Dioxide Is a Spontaneous Process Δ\DeltaΔ

The Sublimation of Solid Carbon Dioxide Is a Spontaneous Process $\Delta$