在一个恒温恒容的密闭容器中,N2(g)+3H2(g)2NH3(g)达到平衡状态。此时如果通入N2或H2,平衡必定正向移动,NH3的物质的量增加。但是,如果上述情况发生在一个恒温恒压的密闭容器中,结果又怎样呢?这是我们经常遇到而又感到十分棘手的问题。不少人认为,通入N2或H2的瞬间,N2或H2的浓度增大,根据平衡移动原理,上述平衡必定正向移动,所以NH3的物质的量增加。实际情况是 In a constant temperature and constant volume sealed container, N2 (g) + 3H2 (g) 2NH3 (g) reaches an equilibrium state. At this point if access to N2 or H2, the balance must move forward, the amount of NH3 substances increased. However, what happens if the above happens in a closed container with constant temperature and pressure? This is a problem that we often encounter and feel very tricky. Many people think that when N2 or H2 is introduced, the concentration of N2 or H2 increases. According to the principle of balanced movement, the above equilibrium must be positively shifted, so the amount of NH3 substance increases. The actual situation is