3. Determine how much the difference in liquid levels in two communicating capillaries with diameters d1 and d2 will change when heated from T1 to T2, using the data given in Table 2.2. Find the values of the surface tension of the liquid at a temperature of 293 Kb0 and the densities of the liquid at given temperatures in the reference book. Take the contact angle of the meniscus equal to 0. Draw conclusions about the curvature of the meniscus of the liquid in the capillary, the hydrophilicity of its surface and the nature of the liquid.
Liquid Capillary diameter, mm d1 d2 Temperature, K T1 T2 Temperature coefficient of surface tension –db/dT, mJ*m-2*K-1

Benzyl alcohol 2.00 5.00 303 323 0.382

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