Ice, water and steam co-exist at triple point temperature 273.16 K and pressure 4.6 mm Hg. In a system in which the triple point conditions of temperature and pressure exist, the pressure is increased a little while keeping the temperature constant, then the system contains.
Question
Ice, water and steam co-exist at triple point temperature 273.16 K and pressure 4.6 mm Hg. In a system in which the triple point conditions of temperature and pressure exist, the pressure is increased a little while keeping the temperature constant, then the system contains.
Solution
When the pressure is increased slightly while keeping the temperature constant at the triple point, the system will contain water and ice.
Here's why:
At the triple point, all three phases of a substance (solid, liquid, and gas) coexist in equilibrium. For water, this occurs at 273.16 K and 4.6 mm Hg. If the pressure is increased slightly at this temperature, the equilibrium will shift towards the phases that occupy less volume because an increase in pressure favors the phase that has the lower volume.
In this case, the gas phase (steam) has a much larger volume than the solid (ice) or liquid (water) phases. Therefore, an increase in pressure will shift the equilibrium away from the gas phase and towards the solid and liquid phases.
So, the system will contain water (liquid phase) and ice (solid phase).
Similar Questions
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