Answer to Question #60760 in Physical Chemistry for Sanjukta Ghosh

Question #60760

Can solids exist in equilibrium with vapour? I'm talking about non-sublimable solids, like for example ice?
I was reading a definition which said Freezing point of a liquid is that temperature at which vapour pressure of the liquid phase equals to the vapour pressure of the solid phase. So my question is does solid exist in equilibrium with vapour? I don't get the chemistry behind it. I mean to say how can solidified molecules travel into air and form vapour?

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