Question

Surface tension of ethanol water mixture change in capillary height

Answer 1

According to Eq. (4), the value of critical radius Rcr in silica capillaries, for water is 0.47 mm, for ethanol is 0.45 mm, and for the mixtures are between 0.56 mm and 0.63 mm. In Figure 5 (a) where capillary radius is 0.34 mm, no oscillation was observed around the equilibrium height.

Answer 2

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