In a 500 ,mL flask,the degree of dissociation | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The chemical equation for the dissociation is: $PCl_5 \rightleftharpoons PCl_3 + Cl_2$ Initial moles: $PCl_5 = 5$,$PCl_3 = 0$,$Cl_2 = 0$ Degree of

Vedclass · Accepted Answer

$2.66$

Vedclass · Answer

(B) The chemical equation for the dissociation is: $PCl_5 ightleftharpoons PCl_3 + Cl_2$ Initial moles: $PCl_5 = 5$,$PCl_3 = 0$,$Cl_2 = 0$ Degree of dissociation $\alpha = 0.4$ Moles at equilibrium: $PCl_5 = 5(1 - 0.4) = 3$,$PCl_3 = 5 	imes 0.4 = 2$,$Cl_2 = 5 	imes 0.4 = 2$ Volume of flask $V = 500 \,mL = 0.5 \,L$ Concentrations at equilibrium: $[PCl_5] = 3 / 0.5 = 6 \,mol/L$,$[PCl_3] = 2 / 0.5 = 4 \,mol/L$,$[Cl_2] = 2 / 0.5 = 4 \,mol/L$ Equilibrium constant $K_c = \frac{[PCl_3][Cl_2]}{[PCl_5]} = \frac{4 	imes 4}{6} = \frac{16}{6} = 2.66 \,mol/L$

In a $500 \,mL$ flask,the degree of dissociation of $PCl_5$ at equilibrium is $40 \%$ and the initial amount is $5 \,moles$. The value of equilibrium constant in $mol \,L^{-1}$ for the decomposition of $PCl_5$ is

Similar Questions

In the thermal dissociation of $PCl_5$,the total pressure in the gaseous equilibrium mixture is $1.0 \ atm$ when half of $PCl_5$ is found to dissociate. The equilibrium constant of the reaction $(K_p)$ in atmosphere is

For the reaction,$CO_{(g)} + Cl_{2(g)} \rightleftharpoons COCl_{2(g)}$,the ratio $K_p/K_c$ is equal to:

For the reaction $SO_2 + \frac{1}{2} O_2 \rightleftharpoons SO_3$, if we write $K_p = K_c(RT)^x$, then $x$ becomes

At $1000 \ K$,if the equilibrium constant $K_p$ for the reaction $2 \ NOCl_{(g)} \rightleftharpoons 2 \ NO_{(g)} + Cl_{2(g)}$ is $4.157 \times 10^{-4} \ bar$,the $K_c$ (in $mol \ L^{-1}$) is $(R = 0.083 \ L \ bar \ K^{-1} \ mol^{-1})$

The degree of dissociation of $PCl_{5(g)}$ at $16.8 \ bar$ and $127 \ ^oC$ is $0.4$. The value of $K_p$ for the reaction $PCl_{5(g)} \rightleftharpoons PCl_{3(g)} + Cl_{2(g)}$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module