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我们以400℃,1大气压下HI(气)H_2(气)+I_2(气)的平衡体系为例,继续保持400℃,1大气压时加入H_2(气)或 I_2(气)或 HI(气)后,平衡将如何移动的问题做如下讨论:(一)首先讨论在上述平衡体系中加入 H_2(气)或 I_2(气)的情况:(1)当体系处于恒温恒容状态时,加入 H_2(气)或 I_2(气),会因为〔H_2〕或〔I_2〕摩尔浓度的增大,使平衡向着生成HI 气体的方向移动。(2)当体系处于恒温恒压状态时,加入 H_2(气)或 I_2(气),体系总体积必定要增大(为维持恒压)此时要判断平衡移
Let’s keep the equilibrium system of HI(gas)H_2(gas)+I_2(gas) at 400°C and 1 atmosphere for 400°C. Add H_2 (gas) or I_2 (gas) or HI (gas) at 1 atmosphere. After that, the question of how the balance will move is discussed as follows: (a) First, the situation of adding H 2 (gas) or I 2 (gas) in the above equilibrium system is discussed: (1) When the system is in a constant temperature and constant state, H_2 is added. (Gas) or I 2 (gas), because the molar concentration of [H 2 ] or [I 2 ] increases, the equilibrium shifts toward the generation of HI gas. (2) When the system is in constant temperature and pressure state, add H 2 (gas) or I 2 (gas), the total volume of the system must be increased (to maintain constant pressure) at this time to determine the equilibrium shift