Assume that the surface tension of water is γ=70 mN/m. (a) Calculate the internal pressure of...

Assume that the surface tension of water is γ=70 mN/m.

(a) Calculate the internal pressure of a water droplet of radius 1μm suspended in air at atmospheric pressure.

(b) Show that if a pure fluid is assumed to be incompressible, the chemical potential of a fluid molecule can be written as

μ(T,P) = μ₀(T)+vP,

where v is the specific volume of the molecule, and P is the pressure.

(c) The vapour pressure of bulk water is 0.02atm at temperature 20 °C. Calculate the vapour pressure of a water droplet of radius 1μm. The molar volume of water is 18 cm3/mol.

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genius_generous answered 1 year ago

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