Question

How is osmotic pressure determined by berkeley hartley method?

Answer 1

Answer:

Various methods are employed for the measurement of osmotic pressure but the best known method was suggested by Berkeley and Hartley. The apparatus used is shown in Fig.. A porcelain tube having copper ferrocyanide membrane in its walls in enclosed in a metallic jacket. The porcelain tube is fitted with a reservoir of pure solvent at one end and a capillary tube at the other end. In a metallic jacket is an arrangement for applying external pressure which is measured with the help of pressure eggs.

Answer 2

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▶QUESTION:-How is osmotic pressure determined by berkeley hartley method?

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▶ANSWER:- Due to osmosis the water from tube A flows to the solution in B and causes a movement in the liquid meniscus in D. Berkeley and Hartley prevented the inflow of water on tube B by applying an external pressure through C and maintained the liquid meniscus in at the position until equilibrium.

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