Can I boil off chlorine? Does it evaporate quickly at high temperatures?
I am asking because I want to remove it from drinking water, and I don't want to wait 24 hours for it to evaporate naturally.
Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. It only takes a minute to sign up.Sign up to join this community
Yes, solubility of chlorine decreases drastically as the temperature rises, and it's almost insoluble in boiling water. That's also the reason why in the areas where tap water is chlorinated, it advised to boil it before drinking.
Data from [1, p. 8]:
Figure 5. Solubility of chlorine in water, hydrochloric acid (two concentrations), and sodium chloride solutions (three concentrations) All percentages are weight percents.
In aqueous solutions, chlorine is partially hydrolyzed, and the solubility depends on the pH of the solution. Below 10 °C chlorine forms hydrates, which can be separated as greenish-yellow crystals. Chlorine hydrate is a clathrate, and there is no definite chlorine: water ratio.