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如果用某种动物膜或人工制成的多孔性薄膜把水和蔗糖溶液分开,则水分子可以自由地通过这些半透膜渗入蔗糖溶液,而蔗糖分子则不能通过半透膜向水中扩散,这样就使水分子不断地向蔗糖溶液中扩散,这种现象称为渗透,渗透的结果使膜内外产生一定的压力差,即渗透压力。1、实验仪器按图一的式样制作一支渗透压力管(玻璃)。渗透压力管的上部作成弯管状,管内充
If water or sucrose solution is separated by a certain animal membrane or artificially made porous film, water molecules can freely penetrate the sucrose solution through these semi-permeable membranes, and sucrose molecules cannot diffuse into the water through the semi-permeable membrane. The water molecule is continuously diffused into the sucrose solution. This phenomenon is called permeation. The result of permeation causes a certain pressure difference between the inside and the outside of the membrane, namely the osmotic pressure. 1, the experimental apparatus according to the pattern of Figure one production of a penetrating pressure tube (glass). The upper part of the penetrating pressure pipe is made into a bent tube, and the tube is filled