# Why does salt ions is not exist at vapor when the water is boiled and evaporated?

I would like to understand when the water is boiled only pure vapor is produced and ions do not exist with vapor. Why?

Can't the ions stick to water vapor?

And

Are Na+ and Cl- have boiling points? Why do they not evaporate?

• Vaporisation involves a molecule dehydrating. The hydration free energy of Na and Cl is something like $10\times$ that of a water molecule. – lemon Dec 14 '18 at 16:24
• This answer here chemistry.stackexchange.com/questions/31932/… shows how the ions are "bound" by H2O – anna v Dec 14 '18 at 18:22
• I believe you can see salt evaporating from the sea level, on a windy day. It seems to keep close to the surface though. – Ján Lalinský Dec 14 '18 at 21:08

• You cannot vaporize an isolated Na$^+$. It must take one Cl$^-$ with it. Once it leaves the water phase and goes into the vapour, it will solidify. This indecent can indeed happen as some ions will have enough kinetic energy (due to Maxwell-Boltzmann distribution) to leave the water liquid phase. – Archisman Panigrahi Dec 14 '18 at 16:28