Chemical and Ionic Equilibrium - Result Question 85

####29. The $%$ yield of ammonia as a function of time in the reaction, $N _2(g)+3 H _2(g) \rightleftharpoons 2 NH _3(g) ; \Delta H<0$

(2015 adv.)

at $\left(p, T _1\right)$ is given below.

If this reaction is conducted at $\left(p, T _1\right)$, with $T _2>T _1$ the $%$ yield by of ammonia as a function of time is represented by

(a)

(c)

(b)

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Solution:

  1. Since, the reaction is exothermic, there will be less ammonia at equilibrium and higher temperature. However, rate of reaction increases with rise in temperature, $NH _3$ will be formed at faster rate in the initial stage when the temperature is high.


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