方法一 实验装置:见图1。 操作步骤:1.用两支50ml注射器分别吸入NO_2—N_2O_4平衡混和气和溴—空气混和气,使其颜色相同。 2.如图1安好实验装置,加压,使两种混和气的体积各为25ml,用框架固定。此时,两混和气的压强均增大,可观察到由于平衡移动造成的NO_2—N_2O_4混和气的体积小于25ml,且颜色变得较浅。 Method One Experimental setup: See Figure 1. Procedure: 1. Inhale NO 2 -N 2 O 4 balanced mixed gas and bromine-air mixed gas with two 50 ml syringes to make their colors the same. 2. As shown in Figure 1, a good experimental device, pressurization, so that the volume of the two mixed gases are each 25ml, fixed with a frame. At this point, the pressure of both mixed gases increased, and the volume of NO 2 -N 2 O 4 mixed gas due to the equilibrium movement was observed to be less than 25 ml, and the color became lighter.