GKFix MCQ Question

What is an example of solid-vapor equilibrium?

• A. H₂O(l) ⇌ H₂O(vap)
• B. Camphor(solid) ⇌ Camphor(vapor)
• C. NH₄Cl(solid) ⇌ NH₄Cl(vapor)
• D. NaCl(solid) ⇌ NaCl(vapor)