hermanntrude Posted May 11, 2010 Share Posted May 11, 2010 I've been thinking of a demo I want to do to show the distillation fo two volatile substances. I'd like to find a pair of volatile substances which have different boiling points, no azeotropes (or at least none which will cause any errors), and here's the tricky part: they have to be easy to spot the relative concentrations. So the idea is I'll have a mixture, it'll be obvious (perhaps by smell, colour or pH) that it's got both substances in it. I'll distil it for a while and it'll then be obvious that the new mixture is more concentrated in the more volatile substance. Ideally, the concentration of one substance would be fairly easy to quantify, at least on a rough scale. I wondered if perhaps an acid in water might work, despite probably not being very close to ideal... or perhaps there's a coloured volatile liquid I could use? perhaps density would be an indicator? suggestions anyone? Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now