Chemistry · 2019
JEE Main · 11 January 2019, Shift 1 · Q57
Consider the reaction N_2( g )+3 H_2( g ) ⇌ 2 NH_3( g ) The equilibrium constant of the above reaction is K_p. If pure ammonia is left to dissociate,…
Consider the reaction
$$\mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_3(\mathrm{~g})
$$
The equilibrium constant of the above reaction is $\displaystyle \mathrm{K}_{\mathrm{p}}$. If pure ammonia is left to dissociate, the partial pressure of ammonia at equilibrium is given by (Assume that
$$\mathrm{P}_{\mathrm{NH}_3} \ll \mathrm{p}_{\text {total }} \text { at equilibrium) }
$$
Official answer
(4)
$\displaystyle \frac{3^{3 / 2} K_p^{1 / 2} p^2}{16}$
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.