急!What is the b.p and m.p of ozone?(15分)
I want to know the physical proporty of ozone, espectially for b.p & m.p.
- 1 decade agoFavorite Answer
Ozone gas (O3) is often generated as an undesirable pollutant in smog and industrial emissions. It is also produced for sterilisation and for cleaning and detoxification purposes and is s a "green" alternative to chlorine. Ozone in the atmosphere is a critical component for filtering damaging UV radiation. Pure ozone gas is a bluish colour. At low temperatures (-111.9°C) liquid ozone forms as a blue-black liquid and if generated is a potentially explosive and unstable oxidant. At lower temperatures (-193°C) the solid ozone is formed as a bluish-black solid.
Physical Properties for Ozone
Molecular Weight: 47.9982
CAS (chemical abstract number):10028-15-6
Melting Point (1 atm.): -111.9°C
Boiling Point: -197.7°C
Critical Temperature :-12.1°C
Critical Pressure:54.6 atm.
Density (gas) @ 0°C:2.144 g/L
Density (liquid) -183°C:1.571 g/L
Viscosity of Liquid -183°C :1.57 cp
Ozone is a pale-blue poisonous gas with a sharp, irritating odor. Most people can detect about 0.01 ppm in air. Exposure to 0.1 to 1 ppm produces headaches, burning eyes, and irritation to the respiratory passages.
At -112 °C, it forms a dark blue liquid. At temperatures below -193 °C, it forms a violet-black solid
- ?Lv 71 decade ago
bp is -112 oC
mp is -193oC
rmw is 48
ozone is O3