Two gases mix in an isolated box with ∆H = 0. What drives the mixing?
AFall in system enthalpy
BRise in system entropy
CRise in Gibbs energy
DFall in internal energy
Answer & Solution
Correct answer: B. Rise in system entropy
With no enthalpy change, mixing proceeds because the system becomes more disordered.
Keep practising Thermodynamics
Browse all Thermodynamics questions for NEET UG, or explore more Chemistry topics.
Related questions
Molecules spinning like a top show which kind of motion?For a gas reaction with ∆ng = +1 at 300 K, ∆H - ∆U is about:Heat from an exothermic reaction favours spontaneity because it:Ionization energy and electron affinity, unlike the matching enthalpies, are defined at:In thermodynamics, energy exchanged because of a temperature difference is called:Two moles of ideal gas expand reversibly at 300 K to ten times their volume. Work done w?Kp for 3/2 O2(g) → O3(g) at 298 K is 2.47 x 10^-29. ∆rG° for this change is about:A reaction has K = 10 at 300 K. Using R = 8.314 J/K mol, ∆rG° is about: