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Surface tension of mercury and water in glass

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Water rises to a height of 5 cm in a certain glass capillary tube. In the same tube the level of mercury surface is depressed by 1.54cm. Compare the surface tensions of water and mercury. Specific weight of Mercury is 13.6 x10^3 Kg/m^3 and that of water is 10^3 Kg/m^3. Angle of contact of glass with mercury and water is 130 degree and 0 degree, respectively.

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Solution Preview

rise of liquid column in a capillary tube,
h = 2 ST cos(theta) / (R rho g)
=> ST = h R rho g / (2 cos(theta) ) =

column ...

Solution Summary

This solution provides calculations to compare the surface tensions of water and mercury in glass tubes.

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