Consider the following equilibrium at 2773K H_2(g)+Cl_2(g) 2HCl(g… - Vidyadip

Question

Consider the following equilibrium at 2773K
$\text{H}_2(\text{g})+\text{Cl}_2(\text{g})\rightleftharpoons2\text{HCl}(\text{g})$
Initially $0.25M H_2$ and $0.25MCl_2$ are introduced into a reaction vessel and the system in allowed to attain equilibrium. At equilibrium the concentrations of $H_2(g)$ and $Cl_2(g)$ became $0.0314M$. Calculate $K_c$ and $K_p$.

✓

Answer

$\begin{matrix}&\text{H}_2(\text{g})&+&\text{Cl}_2(\text{g})\rightleftharpoons&\text{2Hcl}(\text{g})\\\text{Initial Conc. }&0.25&&0.25\text{M}&0\\\text{Final Conc.at equilibrium}&0.0314\text{M}&&0.0314\text{M}&0\end{matrix}$

$2(0.25-0.0314)=0.2186\text{M}\times2$

$=0.219\text{M}\times2=0.438$

$\text{K}_{\text{c}}=\frac{[\text{HCl}]^2}{[\text{H}_2][\text{Cl}_2]}$

$=\frac{(0.438)^2}{0.0314\times0.314}=195$

$\text{K}_{\text{p}}=\text{K}_{\text{c}}(\text{RT})^{\Delta\text{n}}$

$\Delta\text{n}=0$

$\text{K}_{\text{p}}=\text{K}_{\text{c}}=195$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Equilibrium→Equilibrium — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Among $\mathrm{NH}_3, \mathrm{H}_2 \mathrm{O}$ and HF , which would you expect to have highest magnitude of hydrogen bonding and why?

The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each.

What is the effect of the following processes on the bond order in $N^-$, and $O_2$?

$N_2 → N^+_2 + e^–$
$O_2 → O^+_2 + e^–$

What is the pH of $0.001M$ aniline solution? The ionization constant of aniline can be taken from Table $7.7$. Calculate the degree of ionization of aniline in the solution. Also calculate the ionization constant of the conjugate acid of aniline.

What does atomic radius and ionic radius really mean to you?

A certain salt X, gives the following results.

Its aqueous solution is alkaline to litmus.
It swells up to a glassy material Y on strong heating.
When conc. $H_2SO_4$ is added to a hot solution of X, white crystal of an acid Z separates out.

Write equations for all the above reactions and identify X, Y and Z.

What are the major causes of water pollution? Explain.

Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?

Write chemical reactions to justify that hydrogen peroxide can function as an oxidising as well as reducing agent.

List gases which are responsible for greenhouse effect.