Higher yield of NO in $\mathrm{N}_{2(g)}+\mathrm{O}_{2(g)} \rightleftharpoons 2 \mathrm{NO}_{(g)}$ c

Question

Higher yield of NO in $\mathrm{N}_{2(g)}+\mathrm{O}_{2(g)} \rightleftharpoons 2 \mathrm{NO}_{(g)}$ can be obtained at [ $\Delta H$ of the reaction $=+180.7 \mathrm{~kJ} \mathrm{~mol}^{-1}$ ] 
A. higher temperature 
B. lower temperature 
C. higher concentration of $\mathrm{N}_2$ 
D. higher concentration of $\mathrm{O}_2$. 
Choose the correct answer from the options given below:

Professor PC Thomas Classes · Answer

(b) : $\mathrm{N}_{2(g)}+\mathrm{O}_{2(g)} \rightleftharpoons 2 \mathrm{NO}_{(g)} ; \Delta H=+180.7 \mathrm{~kJ} \mathrm{~mol}^{-1}$
As the given reaction is endothermic hence, it will go to product side on increasing temperature. Also, on adding reactants, reaction goes towards product side.
Hence condition given in A, C and D increases the production of $\mathrm{NO}_{(g)}$.