Do solids and liquids exert a vapour pressure?

1 Answer
Jul 8, 2017

Answer:

I am not entirely clear as to what you are asking........

Explanation:

Liquids (and some solids) do exert an #"equilibrium vapour pressure"#...... i.e.

#"Liquid "rightleftharpoons" Gas"#

The extent of the equilibrium is a function of temperature, and at the liquid's #"normal boiling point"#, the vapour pressure of the solution is #1*atm#. At temperatures LESS than the normal boiling point, a vapour pressure will still be exerted. For water, the vapour pressures are extensively tabulated.......and of course must be accounted for when we collect a volume of gas by water displacement.

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Sometimes, the vapour pressures are reported in #"mm Hg"#, and thus this measurement can be subtracted from the atmospheric pressure of #"760 mm Hg"#,