The states change that solid caffeine passes through in order to become gas is ; Solid caffeine --- > liquid form -----> solid form ----->gaseous form
Caffeine is an alkaloid that is slightly soluble in hot water but we make use of dichloromethane because of the solubility of caffeine in an organic medium whereby the solid caffeine is converted to liquid.
next step is the use of anhydrous solids to remove the water component of the solution to get back the solid form of the caffeine. the organic solvent is evaporated, to purify the new solid form of caffeine.
Finally the solid form of caffeine undergoes sublimation ( changes from solid to gas ) to obtain a purer solid caffeine.
The solid caffeine undergoes ;
Hence we can conclude that the states of change that solid caffeine passes through in order to become gas is ; Solid caffeine --- > liquid form -----> solid form ----->gaseous form .
Learn more : https://brainly.com/question/14446766
