Given: S + frac{3}{2} O_2 to SO_3 + 2x text{ | vedclass

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

Question

(A) The given equations are:$(1) \ S + \frac{3}{2} O_2 	o SO_3, \ \Delta H_1 = -2x \ 	ext{kcal}$$(2) \ SO_2 + \frac{1}{2} O_2 	o SO_3, \ \Delta H_2

Vedclass · Accepted Answer

$y - 2x$

Vedclass · Answer

(A) The given equations are:$(1) \ S + \frac{3}{2} O_2 	o SO_3, \ \Delta H_1 = -2x \ 	ext{kcal}$$(2) \ SO_2 + \frac{1}{2} O_2 	o SO_3, \ \Delta H_2 = -y \ 	ext{kcal}$To find the heat of formation of $SO_2$,we need the reaction: $S + O_2 	o SO_2$.Subtract equation $(2)$ from equation $(1)$:$(S + \frac{3}{2} O_2) - (SO_2 + \frac{1}{2} O_2) 	o SO_3 - SO_3$$S + O_2 - SO_2 	o 0$$S + O_2 	o SO_2$The enthalpy change is $\Delta H = \Delta H_1 - \Delta H_2 = (-2x) - (-y) = y - 2x \ 	ext{kcal}$.

Bond	Bond energy $(kJ \ mol^{-1})$
$C-H$	$413$
$C-C$	$348$
$C=C$	$610$
$H-H$	$436$

Given: $S + \frac{3}{2} O_2 \to SO_3 + 2x \ \text{kcal}$,$\Delta H = -2x \ \text{kcal}$ and $SO_2 + \frac{1}{2} O_2 \to SO_3 + y \ \text{kcal}$,$\Delta H = -y \ \text{kcal}$. Find the heat of formation of $SO_2$.

Similar Questions

The average $C-H$ bond energy is $416 \ kJ \ mol^{-1}$. Which of the following equations correctly represents the bond dissociation of $CH_4$?

If enthalpies of formation of $C_2H_{4(g)}$,$CO_{2(g)}$ and $H_2O_{(l)}$ at $25 \ ^\circ C$ and $1 \ atm$ pressure are $52$,$-394$ and $-286 \ kJ \ mol^{-1}$ respectively,the enthalpy of combustion of $C_2H_{4(g)}$ will be.....$kJ \ mol^{-1}$.

Enthalpy change for the reaction,$\frac{1}{2} H_2(g) + \frac{1}{2} Cl_2(g) \to HCl(g)$,is called:

With the help of the following data,find out the change in heat content for the reaction in $kJ$:
$C_2H_{4(g)} + H_{2(g)} \to C_2H_{6(g)}$

Bond Bond energy $(kJ \ mol^{-1})$

$C-H$ $413$

$C-C$ $348$

$C=C$ $610$

$H-H$ $436$

Heat of transition is the heat evolved or absorbed when a substance is converted from

Vedclass Test Series

Exam Paper Generator

Online Exam Module