An example of a spontaneous process having $\Delta$H ~ 0 is A) 1 L He(1 atm, 298 K) + 1 L Ar(1 atm, 298 K) $\rightarrow$ 2 L He/Ar mixture(1 atm, 298 K). B) evaporation of water at 100^$\omicron$C and 1 atm. C) a ball rolling from the top of a hill to the bottom of a valley. D) precipitation of AgBr(s) from a solution of Ag⁺(aq) and Br^-(aq). E) freezing of water at -^$\omicron$C.

Question

Quizplus · Accepted Answer

Mixing of gases like helium and argon at constant temperature and pressure without a change in enthalpy is an example of a spontaneous process where $\Delta H$ is approximately zero.

An Example of a Spontaneous Process Having Δ\DeltaΔ H ~ 0 Is A) 1 L He(1 Atm, 298

An Example of a Spontaneous Process Having $\Delta$ H ~ 0 Is
A) 1 L He(1 Atm, 298