气体扩散定律指出:“气体的扩散速度与气体密度的平方根成反比.”?式中u是气体的扩散速度,d是气体的密度.气体的密度越小,它的扩散速度就越快.一般都采用以下的方法来演示气体扩散现象.取一支细长的玻璃管,左端用浸了浓盐酸的棉花团塞住,右端用浸了浓氨水的棉花团塞 The law of gas diffusion states that: “The diffusion rate of a gas is inversely proportional to the square root of the gas density.” where u is the diffusion rate of the gas and d is the density of the gas. The smaller the gas density, the faster it will diffuse. In general, the following methods are used to demonstrate the phenomenon of gas diffusion. Take an elongated glass tube, the left end is plugged with a cotton mass impregnated with concentrated hydrochloric acid, and the right end is covered with a cotton plug impregnated with concentrated ammonia.