While diluting concentrated sulfuric acid with water,the temperature of the solution increases rapidly.What are the signs of ΔrH,ΔrS,and ΔrG for the process? A) Δ_rH 0,and Δ_rG

Question

While diluting concentrated sulfuric acid with water,the temperature of the solution increases rapidly.What are the signs of ΔrH,ΔrS,and ΔrG for the process? A) Δ_rH < 0,Δ_rS > 0,and Δ_rG < 0 B) Δ_rH < 0,Δ_rS < 0,and Δ_rG < 0 C) Δ_rH < 0,Δ_rS > 0,and Δ_rG > 0 D) Δ_rH > 0,Δ_rS > 0,and Δ_rG < 0 E) Δ_rH > 0,Δ_rS < 0,and Δ_rG > 0

Quizplus · Accepted Answer

The process is exothermic (ΔrH < 0) because heat is released. The entropy of the system increases (ΔrS > 0) because the sulfuric acid molecules become more dispersed in the water. The Gibbs free energy of the system decreases (ΔrG < 0) because the process is spontaneous.

While Diluting Concentrated Sulfuric Acid with Water,the Temperature of the Solution