A at 25oc water rises 736cm in a capillary of radius 02mm, Ask an Expert

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a) At 25oC , water rises 7.36cm in a capillary of radius 0.2mm. Calculate the surface tension of water at 25 oC in mN/m and mJ/m2

b) The contact angle between water and a carbon nanotube (CNT) bundle is 86.3o (J. Phys. Chem. B, 2006, 110, 15945). If the surface tension of CNTs is ~28mN/m, calculate the interfacial tension between water and CNTs.

c) A 100g of bulk water is dispersed as droplets of radius 0.5x10-5 mm. How much work (in kJ) is required to do this?

d) Approximate the number of water molecules in a droplet of water of radius 0.5x10-5 mm

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Category:- Chemistry
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