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Lattice Energy

in the equili...

Question

in the equilibrium mixture ${C a C O}_{3}$ --------CaO+ ${C O}_{2}$ pressure of ${C O}_{2}$ at 27 degree is 2 atm what will be the pressure of ${C O}_{2}$ when 2 moles of ${C O}_{2}$ are added into equilibrium mixture

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Solution

$T h e r e a c t i o n i s$
${C a C O}_{3} (s) \leftrightarrow C a O (s) + C O_{2} (g)$
$S i n c e {C a C O}_{3} a n d C a O b o t h a r e s o l i d s h e n c e K_{p} i s d e t e r m i n e d b y C O_{2} o n l y .$
$T h e r e f o r e K_{p} = p (C O_{2})$
$H e n c e w e k n o w t h a t a t e q u i l i b r i u m K_{p} = 2 a t m$
$W e t h a t t h a t a c c o r d i n g t o L e c h a t e l i e r^{'} s p r i n c i p l e w h e n 2 m o l e s o f c a r b o n d i o x i d e a r e a d d e d (t h e c o n c e n t r a t i o n o f p r o d u c t i s i n c r e a s e s) t h e t h e r e a c t i o n m o v e s i n b a c k w a r d d i r e c t i o n i n o r d e r t o f o r m m o r e r e a c t a n t s b u t a s t h e p r e s s u r e o f c a r b o n d i o x i d e b e c o m e s 2 a t m, t h e r e a c t i o n w o u l d h a v e r e a c h e d e q u i l i b r i u m .$
$H e n c e w e m a y c o n c l u d e t h a t e q u i l i b r i u m p r e s s u r e o f c a r b o n d i o x i d e i s 2 a t m$

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Similar questions

For the reaction $C a C O_{3}$ (s) $⇋$ $C a O$ (s) + $C O_{2}$ (g) the partial pressure of $C O_{2}$ (at equilibrium) depends on:

817^{o} C

K_{p}

{C O}_{2}

2 C O (g)

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817^{o} C

4 a t m

{C O}_{2}

6

{C O}_{2}

700 K

{C O}_{2}

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C O

H_{2} O

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0.11

0.45

{C O}_{2}

0.45

H_{2}

700 K

0.34 m o l e

{C O}_{2}

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The equilibrium constant for the reaction,

CaCO₃(s) ⇌ CaO(s) + CO₂(g), is

K_{p}

C a C O_{3} ⇌ C a O + C O_{2}

T

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