The triple point pressure or the pressure in atm at which the solid, liquid, and gas phases of SO₂ can coexist at the same time is 0.0165 am
The triple point of a substance is the temperature and pressure at which a substance can exist in equilibrium in the liquid, solid, and gaseous states.
Different substances have different triples points.
The triple point of pure water is at 0.01°C and 4.58 mmHg.
The triple point of sulfur dioxide is 197.64 K and 0.0165 atm.
Therefore, the pressure in atm at which the solid, liquid, and gas phases of SO₂ can coexist at the same time is 0.0165 am
In conclusion, the triple point of substance varies.
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