Which outcome occurs when a sealed container of water undergoes adiabatic expansion at its triple point?

💡 Explanation

Cooling induced by adiabatic pressure decrease at the triple point causes simultaneous melting, vaporization, and sublimation because enthalpy favors coexisting phases. Triple point equilibrium shifts to maintain stability, therefore triple-phase coexistence occurs, rather than altering vapor pressures or causing supercooling because heat isn't added.

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