Search any question & find its solution
Question:
Answered & Verified by Expert
In the synthesis of ammonia
$\mathrm{N}_{2}+3 \mathrm{H}_{2}=2 \mathrm{NH}_{3}$ $a, K=K_{C} R T$
Options:
$\mathrm{N}_{2}+3 \mathrm{H}_{2}=2 \mathrm{NH}_{3}$ $a, K=K_{C} R T$
Solution:
2710 Upvotes
Verified Answer
The correct answer is:
$K_{p}=K_{C}(R T)^{-2}$
For the following reaction,
$$
\begin{gathered}
\mathrm{N}_{2}(g)+3 \mathrm{H}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_{3}(g) \\
\Delta n=\text { number of moles of product in gaseous state } \\
-\text { number of moles of reactant in gaseous state } \\
=2-(3+1)=-2 \\
\because \quad K_{p}=K_{C}(R T)^{\Delta n}
\end{gathered}
$$
$\therefore \quad K_{p}=K_{C}(R T)^{-2}$
$$
\begin{gathered}
\mathrm{N}_{2}(g)+3 \mathrm{H}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_{3}(g) \\
\Delta n=\text { number of moles of product in gaseous state } \\
-\text { number of moles of reactant in gaseous state } \\
=2-(3+1)=-2 \\
\because \quad K_{p}=K_{C}(R T)^{\Delta n}
\end{gathered}
$$
$\therefore \quad K_{p}=K_{C}(R T)^{-2}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.