What are the physical properties of ozone? - Vidyadip

Question

What are the physical properties of ozone?

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Answer

The physical properties of ozone are as follows :

Gaseous ozone is blue, liquid ozone is dark blue and solid ozone is violet-black.
It has a pungent odour hence the name is ozone.
At higher concentrations (about 100 ppm), it is harmful and results into nausea and headache while in small concentrations it is harmless.
Ozone is thermodynamically less stable than oxygen.
The decomposition of ozone $\left(2 O _3 \rightarrow 3 O _2\right)$ is exothermic $(\Delta H < O )$ and has $\Delta S >0$.Z
Therefore $\Delta G<0$ and hence decomposition of $O _3$ is spontaneous.
Ozone is diamagnetic in nature.

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