4.0 ,moles of argon and 5.0 , moles of PCI _ 5 are introduced int… - Vidyadip

MCQ

$4.0\,moles$ of argon and $5.0\, moles$ of $PCI _{5}$ are introduced into an evacuated flask of $100\, litre$ capacity at $610\, K$. The system is allowed to equilibrate. At equilibrium, the total pressure of mixture was found to be $6.0 \,atm$. The $K _{ p }$ for the reaction is ...... [Given : $R=0.082 \,L \,atm\, K ^{-1}\, mol ^{-1}$ ]

✓
$2.25$
B
$6.24$
C
$12.13$
D
$15.24$

✓

Answer

Correct option: A.

$2.25$

a
$PCl _{5}=5$ $mole$

$Ar =4$ $mole$

$P _{\text {Total }}=\frac{9 \times 0.82 \times 610}{100}=4.5 \,atm$

$P _{ PCI _{5}}=\frac{5 \times 4.5}{9}=2.5 ; P _{ Ar }=\frac{4 \times 4.5}{9}=2$

$PCl _{5} \rightleftharpoons PCl _{3}+ Cl _{2}$

$2.5- P \quad P \quad P$

$P_{\text {total }}=2.5-P+P+P+P_{A r}=6$

$P =1.5$

$K_{p}=\frac{1.5 \times 1.5}{1}=2.25$

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 "M.C.Q (1 Marks)" from 6.1. Equilibrium - 1 (chemical Equilibrium)→6.1. Equilibrium - 1 (chemical Equilibrium) — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which concept best explains that $o-$nitrophenol is more volatile than $p-$nitrophenol

The equilibrium concentrations of the species in the reaction $A + B \rightleftharpoons C + D$ are $2,3,10$ and $6\,mol\,L-1$, respectively at $300\,K . \Delta G ^{\circ}$ for the reaction is ( $\left.R =2\,cal / mol\, K \right)$

$B{X_3} + N{H_3}\xrightarrow{{R.T}}B{X_3}.N{H_3} + Heat\,of\,adduct\,formation\,\left( {\Delta H} \right)$ The numerical value of $\Delta H$ is found to be maximum for

Back bonding in $BF_3$ does not affect

Geometrical isomers differ in

Thermodynamics is the branch of science concerned with $ ........ $ and $ ......... $ and their relation to energy and work :

According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon ?

$18\, gm$ of ice is converted into water at $0\,^oC$ and $1\, atm$. The entropies of $H_2O(s)$ and $H_2O(l)$ are $38.2$ and $60\, J/mol\, K$ respectively. The enthalpy change for this conversion is.....$J/mol$

Solubility of $BaF_2$ in a solution of $Ba(NO_3)_2$ will be represented by the concentration term?

$C + \frac{1}{2}{O_2} \to CO;\,\Delta H = - 42\,kJ$

$CO + \frac{1}{2}{O_2} \to C{O_2};\,\Delta H = - 24\,kJ$ The heat of formation of $C{O_2}$ is .....$kJ$