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For the reaction CaCO 3 (s) CaO (s) + CO 2 (g), Kp = 0.5 atm at 25 0 C . If 20 gm of CaCO 3 is placed in a closed container at 25 0 C, calculate the amount of CO 2 produced at equilibrium. (a) 20 gm (b) 44gm (c) Data insufficient (d) None of these -------------------------------------------------------------------------------------------------------------------- Sir, I proceeded as shown below , am I right or wrong Please give detailed solution Kp = Kc (RT) n Here n = 1 So, Kc = Kp/RT = 0.5/(0.0821* 298) = 0.0204 -------------------------------- (1) Now, CaCO 3 (s) CaO (s) + CO 2 (g) 20/100 0 0 At equilibrium 0.2 - x x x So, Kc = x -------------(2) as CaO and CaCO 3 are solid From (1) and (2) x = 0.0204 moles = 0.0204 * 44 gm = 0.9 gm Please reply soon

For the reaction


CaCO3 (s) <=> CaO (s) + CO2 (g), Kp = 0.5 atm at 250C . If 20 gm of CaCO3 is placed in a closed container at 250C, calculate the amount of CO2 produced at equilibrium.


(a) 20 gm     (b) 44gm   (c) Data insufficient    (d) None of these


--------------------------------------------------------------------------------------------------------------------


 


Sir,


I proceeded as shown below , am I right or wrong Please give detailed solution


 


 


Kp = Kc (RT)n                       Here n = 1


So,


Kc = Kp/RT = 0.5/(0.0821* 298) = 0.0204   --------------------------------  (1)


 


Now,


 


CaCO3 (s) <=> CaO (s) + CO2 (g)


20/100               0              0


At equilibrium


0.2 - x                 x               x


So, Kc = x       -------------(2)                       as CaO and CaCO3 are solid


From (1) and (2)


x = 0.0204 moles = 0.0204 * 44 gm = 0.9 gm


 


 


Please reply soon


 


 

Grade:12

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