Ozone Gas | MCQs

Explanation

Ozone is typically a pale blue gas at room temperature and pressure,

Although it can appear colorless at very low concentrations

And becomes a dark blue liquid when condensed,

And a violet-black solid at extremely low temperatures. 

Explanation

Schonbein (1840) concluded that Van Marums observations in 1785 of a peculiar smell,

when an electric discharge was passed through oxygen (or air), was in fact a new gas.

He named it Ozone,

which is derived from a Greek word ozoaterr meaning smell.

Soret in 1860, assigned the molecular formula O3.