For a gaseous reversible reaction,the enthalp | vedclass

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

Question

(B) The relationship between enthalpy change at constant pressure $(\Delta H)$ and constant volume $(\Delta U)$ is given by $\Delta H = \Delta U + \De

Vedclass · Accepted Answer

$1000 \ atm^3 \ M^{-3}$

Vedclass · Answer

(B) The relationship between enthalpy change at constant pressure $(\Delta H)$ and constant volume $(\Delta U)$ is given by $\Delta H = \Delta U + \Delta n_g RT$. Given $\Delta H - \Delta U = 1.8 \ Kcal/mol = 1800 \ cal/mol$ at $T = 300 \ K$. Substituting the values: $1800 = \Delta n_g 	imes 2 	imes 300$,which gives $\Delta n_g = 3$. The relationship between $K_P$ and $K_C$ is $K_P = K_C(RT)^{\Delta n_g}$. Thus,$\frac{K_P}{K_C} = (RT)^{\Delta n_g}$. Given $T = \frac{1}{0.00821} \ K$ and $R = 0.0821 \ L \ atm \ K^{-1} \ mol^{-1} = 0.00821 \ L \ atm \ K^{-1} \ mmol^{-1}$. Using $R = 0.0821 \ L \ atm \ K^{-1} \ mol^{-1}$,we have $RT = 0.0821 	imes \frac{1}{0.00821} = 10$. Therefore,$\frac{K_P}{K_C} = (10)^3 = 1000 \ atm^3 \ M^{-3}$.

For a gaseous reversible reaction,the enthalpy of reaction at constant pressure is $1.8 \ Kcal/mol$ greater than that at constant volume at $300 \ K$. The value of $\left( \frac{K_P}{K_C} \right)$ for the reaction at $T = \left( \frac{1}{0.00821} \right) \ K$ is:

Similar Questions

$1.1 \ mol$ of $A$ and $2.2 \ mol$ of $B$ are mixed in a $1 \ L$ flask until equilibrium is reached. At equilibrium,$0.2 \ mol$ of $C$ is formed. If the equilibrium reaction is $A + 2B \rightleftharpoons 2C + D$,the value of the equilibrium constant $K_C$ is:

For the reaction $CO_{(g)} + Cl_{2_{(g)}} \rightleftharpoons COCl_{2_{(g)}}$,the value of $\frac{K_p}{K_c}$ is .........

For the following reaction in gaseous phase $CO_{(g)} + \frac{1}{2} O_{2(g)} \to CO_{2(g)}$,$K_p/K_c$ is

$A$ sample of $HI_{(g)}$ is placed in a flask at a pressure of $0.2 \ atm$. At equilibrium,the partial pressure of $HI_{(g)}$ is $0.04 \ atm$. What is $K_{p}$ for the given equilibrium?
$2 HI_{(g)} \longleftrightarrow H_{2_{(g)}} + I_{2_{(g)}}$

Vedclass Test Series

Exam Paper Generator

Online Exam Module