NO2 gas on cooling becomes colourless.
Dear student!
NO2 has a deep brown colour, but at low temperatures when the gas cools, the colour almost completely disappears as NO2 dimerizes to form dinitrogen tetroxide, N2O4 .
NO2 gas on cooling becomes colourless.
Dear student!
NO2 has a deep brown colour, but at low temperatures when the gas cools, the colour almost completely disappears as NO2 dimerizes to form dinitrogen tetroxide, N2O4 .