Some free radical chemical reactions start with thephotodissociation of I2 molecules into Iodine atoms (gas phase) bylight with a wavelength shorter than about 792nm. A 100.0mL glasstube, pressure= 55.7mtorr and temperature 25.0C contains I2molecules What minimum amount of energy must be absorbed by theiodine in the tube to dissociate 15% of the the molecules?
