根据反应方程式:3NO_2+H_2O2HNO_3+NO,可以得出每3体积NO_2溶于水后得到1体积NO的结论。但由于在通常情况下,制得的不是纯NO_2,而是NO_2和N_2O_4的混合物,在不同温度下,当它们达到平衡时,两者的体积百分比又是不同的,因此不能认为在任何温度下,该结论是正确的。本文基于这点,对NO_2—N_2O_4混合气体溶于水后,体积发生了怎样的变化,从理论和实验两方面分别进行了分析和验证。 According to the reaction equation: 3NO_2+H_2O2HNO_3+NO, it can be concluded that 1 volume of NO is obtained after every 3 volumes of NO 2 are dissolved in water. However, because under normal circumstances, pure NO2 is not produced, but a mixture of NO2 and N2O4. At different temperatures, when they reach equilibrium, the volume percentages of the two are different, so it cannot be considered at any temperature. This conclusion is correct. Based on this, this paper analyzes and verifies the change in volume of NO_2-N_2O_4 mixed gas after it is dissolved in water.