Which of the following is correct for the condensation of gaseous ammonia at -38°C? The normal boiling point of ammonia is -33°C. A)ΔH 0,and ΔG 0. B)ΔH

Question

Which of the following is correct for the condensation of gaseous ammonia at -38°C? The normal boiling point of ammonia is -33°C. A)ΔH < 0,ΔS > 0,and ΔG > 0. B)ΔH < 0,ΔS < 0,and ΔG < 0. C)ΔH > 0,ΔS < 0,and ΔG < 0. D)ΔH = 0,ΔS = 0,and ΔG < 0. E)ΔH > 0,ΔS > 0,and ΔG > 0.

Quizplus · Accepted Answer

The condensation of gaseous ammonia is an exothermic process (ΔH < 0) because heat is released when a gas condenses into a liquid. The process also results in a decrease in entropy (ΔS < 0) because the gas molecules, which are more disordered, become a liquid, which is more ordered. Since the process is spontaneous at -38°C, which is below the normal boiling point of ammonia, the Gibbs free energy change (ΔG) is negative (ΔG < 0), indicating spontaneity.

Which of the Following Is Correct for the Condensation of Gaseous