The synthesis of ammonia was allowed to reach chemical equilibrium, and then a small amount of deuterium gas () was introduced into the vessel. After some time, , , and were found in the reaction mixt

Question

The synthesis of ammonia was allowed to reach chemical equilibrium, and then a small amount of deuterium gas ($D_2$) was introduced into the vessel. After some time, $NH_2D$, $NHD_2$, and $ND_3$ were found in the reaction mixture. This specific experimental observation proves that:

Prashant Kotian · Accepted Answer

Correct answer: B. The appearance of deuterium-substituted ammonia molecules indicates that even after macroscopic properties have stopped changing (equilibrium), the forward and backward microscopic processes (bond breaking and forming) continue to occur. This proves the dynamic nature of chemical equilibrium.

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